+++ /dev/null
-package chainkd
-
-import (
- "log"
- "testing"
-)
-
-var (
- benchXprv XPrv
- benchXpub XPub
- benchMsg = []byte("Hello, world!")
- benchSig []byte
-)
-
-func init() {
- var err error
- benchXprv, err = NewXPrv(nil)
- if err != nil {
- log.Fatalln(err)
- }
- benchXpub = benchXprv.XPub()
- benchSig = benchXprv.Sign(benchMsg)
-}
-
-func BenchmarkXPrvChildNonHardened(b *testing.B) {
- for i := 0; i < b.N; i++ {
- benchXprv.Child(benchMsg, false)
- }
-}
-
-func BenchmarkXPrvChildHardened(b *testing.B) {
- for i := 0; i < b.N; i++ {
- benchXprv.Child(benchMsg, true)
- }
-}
-
-func BenchmarkXPubChild(b *testing.B) {
- for i := 0; i < b.N; i++ {
- benchXpub.Child(benchMsg)
- }
-}
-
-func BenchmarkXPrvSign(b *testing.B) {
- for i := 0; i < b.N; i++ {
- benchXprv.Sign(benchMsg)
- }
-}
-
-func BenchmarkXPubVerify(b *testing.B) {
- for i := 0; i < b.N; i++ {
- benchXpub.Verify(benchMsg, benchSig)
- }
-}
+++ /dev/null
-package chainkd
-
-import (
- "crypto/hmac"
- "crypto/rand"
- "crypto/sha512"
- "io"
-
- "github.com/bytom/crypto/ed25519"
- "github.com/bytom/crypto/ed25519/ecmath"
-)
-
-type (
- //XPrv external private key
- XPrv [64]byte
- //XPub external public key
- XPub [64]byte
-)
-
-// NewXPrv takes a source of random bytes and produces a new XPrv.
-// If r is nil, crypto/rand.Reader is used.
-func NewXPrv(r io.Reader) (xprv XPrv, err error) {
- if r == nil {
- r = rand.Reader
- }
- var entropy [64]byte
- _, err = io.ReadFull(r, entropy[:])
- if err != nil {
- return xprv, err
- }
- return RootXPrv(entropy[:]), nil
-}
-
-// RootXPrv takes a seed binary string and produces a new xprv.
-func RootXPrv(seed []byte) (xprv XPrv) {
- h := hmac.New(sha512.New, []byte{'R', 'o', 'o', 't'})
- h.Write(seed)
- h.Sum(xprv[:0])
- pruneRootScalar(xprv[:32])
- return
-}
-
-// XPub derives an extended public key from a given xprv.
-func (xprv XPrv) XPub() (xpub XPub) {
- var scalar ecmath.Scalar
- copy(scalar[:], xprv[:32])
-
- var P ecmath.Point
- P.ScMulBase(&scalar)
- buf := P.Encode()
-
- copy(xpub[:32], buf[:])
- copy(xpub[32:], xprv[32:])
-
- return
-}
-
-// Child derives a child xprv based on `selector` string and `hardened` flag.
-// If `hardened` is false, child xpub can be derived independently
-// from the parent xpub without using the parent xprv.
-// If `hardened` is true, child key can only be derived from the parent xprv.
-func (xprv XPrv) Child(sel []byte, hardened bool) XPrv {
- if hardened {
- return xprv.hardenedChild(sel)
- }
- return xprv.nonhardenedChild(sel)
-}
-
-func (xprv XPrv) hardenedChild(sel []byte) (res XPrv) {
- h := hmac.New(sha512.New, xprv[32:])
- h.Write([]byte{'H'})
- h.Write(xprv[:32])
- h.Write(sel)
- h.Sum(res[:0])
- pruneRootScalar(res[:32])
- return
-}
-
-func (xprv XPrv) nonhardenedChild(sel []byte) (res XPrv) {
- xpub := xprv.XPub()
-
- h := hmac.New(sha512.New, xpub[32:])
- h.Write([]byte{'N'})
- h.Write(xpub[:32])
- h.Write(sel)
- h.Sum(res[:0])
-
- pruneIntermediateScalar(res[:32])
-
- // Unrolled the following loop:
- // var carry int
- // carry = 0
- // for i := 0; i < 32; i++ {
- // sum := int(xprv[i]) + int(res[i]) + carry
- // res[i] = byte(sum & 0xff)
- // carry = (sum >> 8)
- // }
-
- sum := int(0)
-
- sum = int(xprv[0]) + int(res[0]) + (sum >> 8)
- res[0] = byte(sum & 0xff)
- sum = int(xprv[1]) + int(res[1]) + (sum >> 8)
- res[1] = byte(sum & 0xff)
- sum = int(xprv[2]) + int(res[2]) + (sum >> 8)
- res[2] = byte(sum & 0xff)
- sum = int(xprv[3]) + int(res[3]) + (sum >> 8)
- res[3] = byte(sum & 0xff)
- sum = int(xprv[4]) + int(res[4]) + (sum >> 8)
- res[4] = byte(sum & 0xff)
- sum = int(xprv[5]) + int(res[5]) + (sum >> 8)
- res[5] = byte(sum & 0xff)
- sum = int(xprv[6]) + int(res[6]) + (sum >> 8)
- res[6] = byte(sum & 0xff)
- sum = int(xprv[7]) + int(res[7]) + (sum >> 8)
- res[7] = byte(sum & 0xff)
- sum = int(xprv[8]) + int(res[8]) + (sum >> 8)
- res[8] = byte(sum & 0xff)
- sum = int(xprv[9]) + int(res[9]) + (sum >> 8)
- res[9] = byte(sum & 0xff)
- sum = int(xprv[10]) + int(res[10]) + (sum >> 8)
- res[10] = byte(sum & 0xff)
- sum = int(xprv[11]) + int(res[11]) + (sum >> 8)
- res[11] = byte(sum & 0xff)
- sum = int(xprv[12]) + int(res[12]) + (sum >> 8)
- res[12] = byte(sum & 0xff)
- sum = int(xprv[13]) + int(res[13]) + (sum >> 8)
- res[13] = byte(sum & 0xff)
- sum = int(xprv[14]) + int(res[14]) + (sum >> 8)
- res[14] = byte(sum & 0xff)
- sum = int(xprv[15]) + int(res[15]) + (sum >> 8)
- res[15] = byte(sum & 0xff)
- sum = int(xprv[16]) + int(res[16]) + (sum >> 8)
- res[16] = byte(sum & 0xff)
- sum = int(xprv[17]) + int(res[17]) + (sum >> 8)
- res[17] = byte(sum & 0xff)
- sum = int(xprv[18]) + int(res[18]) + (sum >> 8)
- res[18] = byte(sum & 0xff)
- sum = int(xprv[19]) + int(res[19]) + (sum >> 8)
- res[19] = byte(sum & 0xff)
- sum = int(xprv[20]) + int(res[20]) + (sum >> 8)
- res[20] = byte(sum & 0xff)
- sum = int(xprv[21]) + int(res[21]) + (sum >> 8)
- res[21] = byte(sum & 0xff)
- sum = int(xprv[22]) + int(res[22]) + (sum >> 8)
- res[22] = byte(sum & 0xff)
- sum = int(xprv[23]) + int(res[23]) + (sum >> 8)
- res[23] = byte(sum & 0xff)
- sum = int(xprv[24]) + int(res[24]) + (sum >> 8)
- res[24] = byte(sum & 0xff)
- sum = int(xprv[25]) + int(res[25]) + (sum >> 8)
- res[25] = byte(sum & 0xff)
- sum = int(xprv[26]) + int(res[26]) + (sum >> 8)
- res[26] = byte(sum & 0xff)
- sum = int(xprv[27]) + int(res[27]) + (sum >> 8)
- res[27] = byte(sum & 0xff)
- sum = int(xprv[28]) + int(res[28]) + (sum >> 8)
- res[28] = byte(sum & 0xff)
- sum = int(xprv[29]) + int(res[29]) + (sum >> 8)
- res[29] = byte(sum & 0xff)
- sum = int(xprv[30]) + int(res[30]) + (sum >> 8)
- res[30] = byte(sum & 0xff)
- sum = int(xprv[31]) + int(res[31]) + (sum >> 8)
- res[31] = byte(sum & 0xff)
-
- if (sum >> 8) != 0 {
- panic("sum does not fit in 256-bit int")
- }
- return
-}
-
-// Child derives a child xpub based on `selector` string.
-// The corresponding child xprv can be derived from the parent xprv
-// using non-hardened derivation: `parentxprv.Child(sel, false)`.
-func (xpub XPub) Child(sel []byte) (res XPub) {
- h := hmac.New(sha512.New, xpub[32:])
- h.Write([]byte{'N'})
- h.Write(xpub[:32])
- h.Write(sel)
- h.Sum(res[:0])
-
- pruneIntermediateScalar(res[:32])
-
- var (
- f ecmath.Scalar
- F ecmath.Point
- )
- copy(f[:], res[:32])
- F.ScMulBase(&f)
-
- var (
- pubkey [32]byte
- P ecmath.Point
- )
- copy(pubkey[:], xpub[:32])
- _, ok := P.Decode(pubkey)
- if !ok {
- panic("XPub should have been validated on initialization")
- }
-
- P.Add(&P, &F)
- pubkey = P.Encode()
- copy(res[:32], pubkey[:])
-
- return
-}
-
-// Derive generates a child xprv by recursively deriving
-// non-hardened child xprvs over the list of selectors:
-// `Derive([a,b,c,...]) == Child(a).Child(b).Child(c)...`
-func (xprv XPrv) Derive(path [][]byte) XPrv {
- res := xprv
- for _, p := range path {
- res = res.Child(p, false)
- }
- return res
-}
-
-// Derive generates a child xpub by recursively deriving
-// non-hardened child xpubs over the list of selectors:
-// `Derive([a,b,c,...]) == Child(a).Child(b).Child(c)...`
-func (xpub XPub) Derive(path [][]byte) XPub {
- res := xpub
- for _, p := range path {
- res = res.Child(p)
- }
- return res
-}
-
-// Sign creates an EdDSA signature using expanded private key
-// derived from the xprv.
-func (xprv XPrv) Sign(msg []byte) []byte {
- return Ed25519InnerSign(xprv.ExpandedPrivateKey(), msg)
-}
-
-// Verify checks an EdDSA signature using public key
-// extracted from the first 32 bytes of the xpub.
-func (xpub XPub) Verify(msg []byte, sig []byte) bool {
- return ed25519.Verify(xpub.PublicKey(), msg, sig)
-}
-
-// ExpandedPrivateKey generates a 64-byte key where
-// the first half is the scalar copied from xprv,
-// and the second half is the `prefix` is generated via PRF
-// from the xprv.
-func (xprv XPrv) ExpandedPrivateKey() ExpandedPrivateKey {
- var res [64]byte
- h := hmac.New(sha512.New, []byte{'E', 'x', 'p', 'a', 'n', 'd'})
- h.Write(xprv[:])
- h.Sum(res[:0])
- copy(res[:32], xprv[:32])
- return res[:]
-}
-
-// PublicKey extracts the ed25519 public key from an xpub.
-func (xpub XPub) PublicKey() ed25519.PublicKey {
- return ed25519.PublicKey(xpub[:32])
-}
-
-// s must be >= 32 bytes long and gets rewritten in place.
-// This is NOT the same pruning as in Ed25519: it additionally clears the third
-// highest bit to ensure subkeys do not overflow the second highest bit.
-func pruneRootScalar(s []byte) {
- s[0] &= 248
- s[31] &= 31 // clear top 3 bits
- s[31] |= 64 // set second highest bit
-}
-
-// Clears lowest 3 bits and highest 23 bits of `f`.
-func pruneIntermediateScalar(f []byte) {
- f[0] &= 248 // clear bottom 3 bits
- f[29] &= 1 // clear 7 high bits
- f[30] = 0 // clear 8 bits
- f[31] = 0 // clear 8 bits
-}
+++ /dev/null
-package chainkd
-
-import (
- "bytes"
- "encoding/hex"
- "fmt"
- "reflect"
- "testing"
-)
-
-func TestVectors1(t *testing.T) {
- root := RootXPrv([]byte{0x01, 0x02, 0x03})
-
- verifyTestVector(t, "Root(010203).xprv", root.hex(),
- "50f8c532ce6f088de65c2c1fbc27b491509373fab356eba300dfa7cc587b07483bc9e0d93228549c6888d3f68ad664b92c38f5ea8ca07181c1410949c02d3146")
- verifyTestVector(t, "Root(010203).xpub", root.XPub().hex(),
- "e11f321ffef364d01c2df2389e61091b15dab2e8eee87cb4c053fa65ed2812993bc9e0d93228549c6888d3f68ad664b92c38f5ea8ca07181c1410949c02d3146")
-
- verifyTestVector(t, "Root(010203)/010203(H).xprv", root.Child([]byte{0x01, 0x02, 0x03}, true).hex(),
- "6023c8e7633a9353a59bd930ea6dc397e400b1088b86b4a15d8de8567554df5574274bc1a0bd93b4494cb68e45c5ec5aefc1eed4d0c3bfd53b0b4e679ce52028")
- verifyTestVector(t, "Root(010203)/010203(H).xpub", root.Child([]byte{0x01, 0x02, 0x03}, true).XPub().hex(),
- "eabebab4184c63f8df07efe31fb588a0ae222318087458b4936bf0b0feab015074274bc1a0bd93b4494cb68e45c5ec5aefc1eed4d0c3bfd53b0b4e679ce52028")
-
- verifyTestVector(t, "Root(010203)/010203(N).xprv", root.Child([]byte{0x01, 0x02, 0x03}, false).hex(),
- "705afd25a0e242b7333105d77cbb0ec15e667154916bbed5084c355dba7b0748b0faca523928f42e685ee6deb0cb3d41a09617783c87e9a161a04f2207ad4d2f")
- verifyTestVector(t, "Root(010203)/010203(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, false).XPub().hex(),
- "c0bbd87142e7bf90abfbb3d0cccc210c6d7eb3f912c35f205302c86ae9ef6eefb0faca523928f42e685ee6deb0cb3d41a09617783c87e9a161a04f2207ad4d2f")
- verifyTestVector(t, "Root(010203)/010203(N).xpub", root.XPub().Child([]byte{0x01, 0x02, 0x03}).hex(),
- "c0bbd87142e7bf90abfbb3d0cccc210c6d7eb3f912c35f205302c86ae9ef6eefb0faca523928f42e685ee6deb0cb3d41a09617783c87e9a161a04f2207ad4d2f")
-
- verifyTestVector(t, "Root(010203)/010203(H)/“”(N).xprv", root.Child([]byte{0x01, 0x02, 0x03}, true).Child([]byte{}, false).hex(),
- "7023f9877813348ca8e67b29d551baf98a43cfb76cdff538f3ff97074a55df5560e3aa7fb600f61a84317a981dc9d1f7e8df2e8a3f8b544a21d2404e0b4e480a")
- verifyTestVector(t, "Root(010203)/010203(H)/“”(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, true).Child([]byte{}, false).XPub().hex(),
- "4e44c9ab8a45b9d1c3daab5c09d73b01209220ea704808f04feaa3614c7c7ba760e3aa7fb600f61a84317a981dc9d1f7e8df2e8a3f8b544a21d2404e0b4e480a")
- verifyTestVector(t, "Root(010203)/010203(H)/“”(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, true).XPub().Child([]byte{}).hex(),
- "4e44c9ab8a45b9d1c3daab5c09d73b01209220ea704808f04feaa3614c7c7ba760e3aa7fb600f61a84317a981dc9d1f7e8df2e8a3f8b544a21d2404e0b4e480a")
-
- verifyTestVector(t, "Root(010203)/010203(N)/“”(H).xprv", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, true).hex(),
- "90b60b007e866dacc4b1f844089a805ffd78a295f5b0544034116ace354c58523410b1e6a3c557ca90c322f6ff4b5e547242965eaed8c34767765f0e05ed0e4f")
- verifyTestVector(t, "Root(010203)/010203(N)/“”(H).xpub", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, true).XPub().hex(),
- "ca97ec34ef30aa08ebd19b9848b11ebadf9c0ad3a0be6b11d33d9558573aca633410b1e6a3c557ca90c322f6ff4b5e547242965eaed8c34767765f0e05ed0e4f")
-
- verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xprv", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, false).hex(),
- "d81ba3ab554a7d09bfd8bda5089363399b7f4b19d4f1806ca0c35feabf7b074856648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
- verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xpub", root.Child([]byte{0x01, 0x02, 0x03}, false).Child([]byte{}, false).XPub().hex(),
- "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
- verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xpub", root.XPub().Child([]byte{0x01, 0x02, 0x03}).Child([]byte{}).hex(),
- "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
-
- verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xprv", root.Derive([][]byte{[]byte{0x01, 0x02, 0x03}, []byte{}}).hex(),
- "d81ba3ab554a7d09bfd8bda5089363399b7f4b19d4f1806ca0c35feabf7b074856648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
- verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xprv", root.Derive([][]byte{[]byte{0x01, 0x02, 0x03}, []byte{}}).XPub().hex(),
- "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
- verifyTestVector(t, "Root(010203)/010203(N)/“”(N).xpub", root.XPub().Derive([][]byte{[]byte{0x01, 0x02, 0x03}, []byte{}}).hex(),
- "28279bcb06aee9e5c0302f4e1db879ac7f5444ec07266a736dd571c21961427b56648f55e21bec3aa5df0bce0236aea88a4cc5c395c896df63676f095154bb7b")
-}
-
-func TestVectors2(t *testing.T) {
- seed, _ := hex.DecodeString("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542")
- root := RootXPrv(seed)
-
- verifyTestVector(t, "Root(fffcf9...).xprv", root.hex(),
- "0031615bdf7906a19360f08029354d12eaaedc9046806aefd672e3b93b024e495a95ba63cf47903eb742cd1843a5252118f24c0c496e9213bd42de70f649a798")
- verifyTestVector(t, "Root(fffcf9...).xpub", root.XPub().hex(),
- "f153ef65bbfaec3c8fd4fceb0510529048094093cf7c14970013282973e117545a95ba63cf47903eb742cd1843a5252118f24c0c496e9213bd42de70f649a798")
-
- verifyTestVector(t, "Root(fffcf9...)/0(N).xprv", root.Child([]byte{0x00}, false).hex(),
- "883e65e6e86499bdd170c14d67e62359dd020dd63056a75ff75983a682024e49e8cc52d8e74c5dfd75b0b326c8c97ca7397b7f954ad0b655b8848bfac666f09f")
- verifyTestVector(t, "Root(fffcf9...)/0(N).xpub", root.Child([]byte{0x00}, false).XPub().hex(),
- "f48b7e641d119b8ddeaf97aca104ee6e6a780ab550d40534005443550ef7e7d8e8cc52d8e74c5dfd75b0b326c8c97ca7397b7f954ad0b655b8848bfac666f09f")
- verifyTestVector(t, "Root(fffcf9...)/0(N).xpub", root.XPub().Child([]byte{0x00}).hex(),
- "f48b7e641d119b8ddeaf97aca104ee6e6a780ab550d40534005443550ef7e7d8e8cc52d8e74c5dfd75b0b326c8c97ca7397b7f954ad0b655b8848bfac666f09f")
-
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).hex(),
- "5048fa4498bf65e2b10d26e6c99cc43556ecfebf8b9fddf8bd2150ba29d63154044ef557a3aa4cb6ae8b61e87cb977a929bc4a170e4faafc2661231f5f3f78e8")
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).XPub().hex(),
- "a8555c5ee5054ad03c6c6661968d66768fa081103bf576ea63a26c00ca7eab69044ef557a3aa4cb6ae8b61e87cb977a929bc4a170e4faafc2661231f5f3f78e8")
-
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).hex(),
- "480f6aa25f7c9f4a569896f06614303a697f00ee8d240c6277605d44e0d63154174c386ad6ae01e54acd7bb422243c6055058f4231e250050134283a76de8eff")
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).XPub().hex(),
- "7385ab0b06eacc226c8035bab1ff9bc6972c7700d1caede26fe2b4d57b208bd0174c386ad6ae01e54acd7bb422243c6055058f4231e250050134283a76de8eff")
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).XPub().Child([]byte{0x01}).hex(),
- "7385ab0b06eacc226c8035bab1ff9bc6972c7700d1caede26fe2b4d57b208bd0174c386ad6ae01e54acd7bb422243c6055058f4231e250050134283a76de8eff")
-
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).hex(),
- "386014c6dfeb8dadf62f0e5acacfbf7965d5746c8b9011df155a31df7be0fb59986c923d979d89310acd82171dbaa7b73b20b2033ac6819d7f309212ff3fbabd")
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).XPub().hex(),
- "9f66aa8019427a825dd72a13ce982454d99f221c8d4874db59f52c2945cbcabd986c923d979d89310acd82171dbaa7b73b20b2033ac6819d7f309212ff3fbabd")
-
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H)/2(N).xprv", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).Child([]byte{0x02}, false).hex(),
- "08c3772f5c0eee42f40d00f4faff9e4c84e5db3c4e7f28ecb446945a1de1fb59ef9d0a352f3252ea673e8b6bd31ac97218e019e845bdc545c268cd52f7af3f5d")
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H)/2(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).Child([]byte{0x02}, false).XPub().hex(),
- "67388f59a7b62644c3c6148575770e56969d77244530263bc9659b8563d7ff81ef9d0a352f3252ea673e8b6bd31ac97218e019e845bdc545c268cd52f7af3f5d")
- verifyTestVector(t, "Root(fffcf9...)/0(N)/2147483647(H)/1(N)/2147483646(H)/2(N).xpub", root.Child([]byte{0x00}, false).Child([]byte{0xff, 0xff, 0xff, 0x7f}, true).Child([]byte{0x01}, false).Child([]byte{0xfe, 0xff, 0xff, 0x7f}, true).XPub().Child([]byte{0x02}).hex(),
- "67388f59a7b62644c3c6148575770e56969d77244530263bc9659b8563d7ff81ef9d0a352f3252ea673e8b6bd31ac97218e019e845bdc545c268cd52f7af3f5d")
-}
-
-func TestExpandedPrivateKey(t *testing.T) {
- root := RootXPrv([]byte{0xca, 0xfe})
- verifyTestVector(t, "Root(cafe).xprv", root.hex(),
- "a0cde08fd2ea06e16dd5d21e64ca0609fa1d719b79fed4245a5b8ada0242464cebbc2b9e1e989aca72d9766efd9b63ebcfc968027ef27cb786babb7897f9248a")
- verifyTestVector(t, "Root(cafe).xprv.expandedkey", root.ExpandedPrivateKey().hex(),
- "a0cde08fd2ea06e16dd5d21e64ca0609fa1d719b79fed4245a5b8ada0242464c1437c8234e21e43eb9c79df0ce370dc82d4c7a952ef317e716b0762146bb61a0")
-
- child := root.Child([]byte{0xbe, 0xef}, false)
- verifyTestVector(t, "Root(cafe)/beef.xprv", child.hex(),
- "684df1aa25e0425c48c76392f42abc87a359ef2a2328ad31e53318128242464cf85916f4261b03f71afa64ad4bc2be4f335f15e433e815b45bbd15fcc7d1a864")
- verifyTestVector(t, "Root(cafe)/beef.xprv.expandedkey", child.ExpandedPrivateKey().hex(),
- "684df1aa25e0425c48c76392f42abc87a359ef2a2328ad31e53318128242464c0abdda57709eff7e9c60e0d4199065a6941122566c0a30ffa3ce0449d0582278")
-}
-
-func TestChildKeys(t *testing.T) {
- rootXPrv, err := NewXPrv(nil)
- if err != nil {
- t.Fatal(err)
- }
- rootXPub := rootXPrv.XPub()
-
- msg := []byte("In the face of ignorance and resistance I wrote financial systems into existence")
-
- sig := rootXPrv.Sign(msg)
- doverify(t, rootXPub, msg, sig, "root xpub", "root xprv")
-
- sel := []byte{1, 2, 3}
- dprv := rootXPrv.Child(sel, false)
- dpub := rootXPub.Child(sel)
-
- sig = dprv.Sign(msg)
- doverify(t, dpub, msg, sig, "derived xpub", "derived xprv")
-
- dpub = dprv.XPub()
- doverify(t, dpub, msg, sig, "xpub from derived xprv", "derived xprv")
-
- dprv = dprv.Child(sel, false)
- sig = dprv.Sign(msg)
- dpub = dpub.Child(sel)
- doverify(t, dpub, msg, sig, "double-derived xpub", "double-derived xprv")
-
- for i := byte(0); i < 10; i++ {
- sel := []byte{i}
-
- // Non-hardened children
- dprv := rootXPrv.Child(sel, false)
- if reflect.DeepEqual(dprv, rootXPrv) {
- t.Errorf("derived private key %d is the same as the root", i)
- }
- dpub1 := rootXPub.Child(sel)
- if reflect.DeepEqual(dpub1, rootXPub) {
- t.Errorf("derived public key %d is the same as the root", i)
- }
- sig := dprv.Sign(msg)
- doverify(t, dpub1, msg, sig, fmt.Sprintf("derived pubkey (%d)", i), "derived xprv")
-
- for j := byte(0); j < 10; j++ {
- sel2 := []byte{j}
- ddprv := dprv.Child(sel2, false)
- if reflect.DeepEqual(ddprv, dprv) {
- t.Errorf("rootXPrv.Child(%d).Child(%d) is the same as its parent", i, j)
- }
- ddpub1 := dpub1.Child(sel2)
- if reflect.DeepEqual(ddpub1, dpub1) {
- t.Errorf("rootXPub.Child(%d).Child(%d) is the same as its parent", i, j)
- }
- sig = ddprv.Sign(msg)
- doverify(t, ddpub1, msg, sig, fmt.Sprintf("double-derived pubkey (%d, %d)", i, j), "double-derived xprv")
- }
-
- // Hardened children
- hdprv := rootXPrv.Child(sel, true)
- if reflect.DeepEqual(hdprv, rootXPrv) {
- t.Errorf("derived hardened privkey %d is the same as the root", i)
- }
- if reflect.DeepEqual(hdprv, dprv) {
- t.Errorf("derived hardened privkey %d is the same as the unhardened derived privkey", i)
- }
- hdpub := hdprv.XPub()
- if reflect.DeepEqual(hdpub, dpub1) {
- t.Errorf("pubkey of hardened child %d is the same as pubkey of non-hardened child", i)
- }
- sig = hdprv.Sign(msg)
- doverify(t, hdpub, msg, sig, fmt.Sprintf("pubkey of hardened child %d", i), "derived xprv")
- }
-}
-
-func doverify(t *testing.T, xpub XPub, msg, sig []byte, xpubdesc, xprvdesc string) {
- if !xpub.Verify(msg, sig) {
- t.Errorf("%s cannot verify signature from %s", xpubdesc, xprvdesc)
- }
-
- for i := 0; i < 32; i++ {
- for mask := byte(1); mask != 0; mask <<= 1 {
- xpub[i] ^= mask
- if xpub.Verify(msg, sig) {
- t.Fatalf("altered %s should not verify signature from %s", xpubdesc, xprvdesc)
- }
- xpub[i] ^= mask
- }
- }
-
- // permute only 1/7th of the bits to make tests run faster
- for i := 0; i < len(msg); i += 7 {
- for mask := byte(1); mask != 0; mask <<= 1 {
- msg[i] ^= mask
- if xpub.Verify(msg, sig) {
- t.Fatalf("%s should not verify signature from %s against altered message", xpubdesc, xprvdesc)
- }
- msg[i] ^= mask
- }
- }
-
- for i := 0; i < len(sig); i++ {
- for mask := byte(1); mask != 0; mask <<= 1 {
- sig[i] ^= mask
- if xpub.Verify(msg, sig) {
- t.Fatalf("%s should not verify altered signature from %s", xpubdesc, xprvdesc)
- }
- sig[i] ^= mask
- }
- }
-}
-
-func verifyTestVector(t *testing.T, message string, got []byte, want string) {
- if !bytes.Equal(got, []byte(want)) {
- t.Errorf("ChainKD Test Vector: %s:\n got = %s\n want = %s", message, got, want)
- }
-}
-
-func (xpub XPub) hex() []byte {
- s, _ := xpub.MarshalText()
- return s
-}
-
-func (xprv XPrv) hex() []byte {
- s, _ := xprv.MarshalText()
- return s
-}
-
-func (key ExpandedPrivateKey) hex() []byte {
- hexBytes := make([]byte, hex.EncodedLen(len(key[:])))
- hex.Encode(hexBytes, key[:])
- return hexBytes
-}
-
-func TestBits(t *testing.T) {
- for i := 0; i < 256; i++ {
- root := RootXPrv([]byte{byte(i)})
-
- rootbytes := root.Bytes()
- if rootbytes[0]&7 != 0 {
- t.Errorf("ChainKD root key must have low 3 bits set to '000'")
- }
- if (rootbytes[31] >> 5) != 2 {
- t.Errorf("ChainKD root key must have high 3 bits set to '010'")
- }
-
- xprv := root
- for d := 0; d < 1000; d++ { // at least after 1000 levels necessary bits are survived
- xprv = xprv.Child([]byte("child"), false)
- xprvbytes := xprv.Bytes()
-
- if xprvbytes[0]&7 != 0 {
- t.Errorf("ChainKD non-hardened child key must have low 3 bits set to '000'")
- }
- if xprvbytes[31]>>6 != 1 {
- t.Errorf("ChainKD non-hardened child key must have high 2 bits set to '10' (LE)")
- }
-
- hchild := xprv.Child([]byte("hardened child"), true)
- hchildbytes := hchild.Bytes()
- if hchildbytes[0]&7 != 0 {
- t.Errorf("ChainKD hardened key must have low 3 bits set to '000'")
- }
- if (hchildbytes[31] >> 5) != 2 {
- t.Errorf("ChainKD hardened key must have high 3 bits set to '010'")
- }
- }
- }
-}
+++ /dev/null
-// Package chainkd This is an extension to ed25519.Sign that is compatible with NaCl `crypto_sign`
-// function taking 64-byte expanded private key (where the left part is a pre-multiplied
-// scalar and the right part is "prefix" used for generating a nonce).
-//
-// Invariants:
-// 1) Expanded(PrivateKey).Sign() == PrivateKey.Sign()
-// 2) InnerSign(Expanded(PrivateKey)) == Sign(PrivateKey)
-package chainkd
-
-import (
- "crypto"
- "crypto/sha512"
- "errors"
- "io"
- "strconv"
-
- "github.com/bytom/crypto/ed25519"
- "github.com/bytom/crypto/ed25519/internal/edwards25519"
-)
-
-const (
- // ExpandedPrivateKeySize is the size, in bytes, of a "secret key" as defined in NaCl.
- ExpandedPrivateKeySize = 64
-)
-
-// ExpandedPrivateKey is the type of NaCl secret keys. It implements crypto.Signer.
-type ExpandedPrivateKey []byte
-
-// Public returns the PublicKey corresponding to secret key.
-func (priv ExpandedPrivateKey) Public() crypto.PublicKey {
- var A edwards25519.ExtendedGroupElement
- var scalar [32]byte
- copy(scalar[:], priv[:32])
- edwards25519.GeScalarMultBase(&A, &scalar)
- var publicKeyBytes [32]byte
- A.ToBytes(&publicKeyBytes)
- return ed25519.PublicKey(publicKeyBytes[:])
-}
-
-func expandEd25519PrivateKey(priv ed25519.PrivateKey) ExpandedPrivateKey {
- digest := sha512.Sum512(priv[:32])
- digest[0] &= 248
- digest[31] &= 127
- digest[31] |= 64
- return ExpandedPrivateKey(digest[:])
-}
-
-// Sign signs the given message with expanded private key.
-// Ed25519 performs two passes over messages to be signed and therefore cannot
-// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
-// indicate the message hasn't been hashed. This can be achieved by passing
-// crypto.Hash(0) as the value for opts.
-func (priv ExpandedPrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
- if opts.HashFunc() != crypto.Hash(0) {
- return nil, errors.New("ed25519: cannot sign hashed message")
- }
-
- return Ed25519InnerSign(priv, message), nil
-}
-
-// Ed25519InnerSign signs the message with expanded private key and returns a signature.
-// It will panic if len(privateKey) is not ExpandedPrivateKeySize.
-func Ed25519InnerSign(privateKey ExpandedPrivateKey, message []byte) []byte {
- if l := len(privateKey); l != ExpandedPrivateKeySize {
- panic("ed25519: bad private key length: " + strconv.Itoa(l))
- }
-
- var messageDigest, hramDigest [64]byte
-
- h := sha512.New()
- h.Write(privateKey[32:])
- h.Write(message)
- h.Sum(messageDigest[:0])
-
- var messageDigestReduced [32]byte
- edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
- var R edwards25519.ExtendedGroupElement
- edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
-
- var encodedR [32]byte
- R.ToBytes(&encodedR)
-
- publicKey := privateKey.Public().(ed25519.PublicKey)
- h.Reset()
- h.Write(encodedR[:])
- h.Write(publicKey[:])
- h.Write(message)
- h.Sum(hramDigest[:0])
- var hramDigestReduced [32]byte
- edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
-
- var sk [32]byte
- copy(sk[:], privateKey[:32])
- var s [32]byte
- edwards25519.ScMulAdd(&s, &hramDigestReduced, &sk, &messageDigestReduced)
-
- signature := make([]byte, ed25519.SignatureSize)
- copy(signature[:], encodedR[:])
- copy(signature[32:], s[:])
-
- return signature
-}
+++ /dev/null
-package chainkd
-
-import (
- "bytes"
- "crypto"
- "testing"
-
- "github.com/bytom/crypto/ed25519"
-)
-
-// Testing basic InnerSign+Verify and the invariants:
-// 1) Expand(PrivateKey).Sign() == PrivateKey.Sign()
-// 2) InnerSign(Expand(PrivateKey)) == Sign(PrivateKey)
-
-type zeroReader struct{}
-
-func (zeroReader) Read(buf []byte) (int, error) {
- for i := range buf {
- buf[i] = 0
- }
- return len(buf), nil
-}
-
-func TestInnerSignVerify(t *testing.T) {
- var zero zeroReader
- public, private, _ := ed25519.GenerateKey(zero)
- expprivate := expandEd25519PrivateKey(private)
-
- message := []byte("test message")
- sig := Ed25519InnerSign(expprivate, message)
- if !ed25519.Verify(public, message, sig) {
- t.Errorf("valid signature rejected")
- }
-
- wrongMessage := []byte("wrong message")
- if ed25519.Verify(public, wrongMessage, sig) {
- t.Errorf("signature of different message accepted")
- }
-}
-
-func TestExpandedKeySignerInterfaceInvariant(t *testing.T) {
- var zero zeroReader
- public, private, _ := ed25519.GenerateKey(zero)
- expprivate := expandEd25519PrivateKey(private)
-
- signer1 := crypto.Signer(private)
- signer2 := crypto.Signer(expprivate)
-
- publicInterface1 := signer1.Public()
- publicInterface2 := signer2.Public()
- public1, ok := publicInterface1.(ed25519.PublicKey)
- if !ok {
- t.Fatalf("expected PublicKey from Public() but got %T", publicInterface1)
- }
- public2, ok := publicInterface2.(ed25519.PublicKey)
- if !ok {
- t.Fatalf("expected PublicKey from Public() but got %T", publicInterface2)
- }
-
- if !bytes.Equal(public, public1) {
- t.Errorf("public keys do not match: original:%x vs Public():%x", public, public1)
- }
- if !bytes.Equal(public, public2) {
- t.Errorf("public keys do not match: original:%x vs Public():%x", public, public2)
- }
-
- message := []byte("message")
- var noHash crypto.Hash
- signature1, err := signer1.Sign(zero, message, noHash)
- if err != nil {
- t.Fatalf("error from Sign(): %s", err)
- }
- signature2, err := signer2.Sign(zero, message, noHash)
- if err != nil {
- t.Fatalf("error from Sign(): %s", err)
- }
- if !bytes.Equal(signature1[:], signature2[:]) {
- t.Errorf(".Sign() should return identical signatures for Signer(privkey) and Signer(Expand(privkey))")
- }
- if !ed25519.Verify(public, message, signature1) {
- t.Errorf("Verify failed on signature from Sign()")
- }
-}
-
-func TestInnerSignInvariant(t *testing.T) {
- var zero zeroReader
- _, private, _ := ed25519.GenerateKey(zero)
- expprivate := expandEd25519PrivateKey(private)
-
- message := []byte("test message")
- sig1 := ed25519.Sign(private, message)
- sig2 := Ed25519InnerSign(expprivate, message)
-
- if !bytes.Equal(sig1[:], sig2[:]) {
- t.Errorf("InnerSign(Expand(privkey)) must return the same as Sign(privkey)")
- }
-}
+++ /dev/null
-package chainkd
-
-import (
- "encoding/hex"
- "errors"
-)
-
-const (
- extendedPublicKeySize = 64
- extendedPrivateKeySize = 64
-)
-
-var (
- ErrBadKeyLen = errors.New("bad key length")
- ErrBadKeyStr = errors.New("bad key string")
-)
-
-func (xpub XPub) MarshalText() ([]byte, error) {
- hexBytes := make([]byte, hex.EncodedLen(len(xpub.Bytes())))
- hex.Encode(hexBytes, xpub.Bytes())
- return hexBytes, nil
-}
-
-func (xpub XPub) Bytes() []byte {
- return xpub[:]
-}
-
-func (xprv XPrv) MarshalText() ([]byte, error) {
- hexBytes := make([]byte, hex.EncodedLen(len(xprv.Bytes())))
- hex.Encode(hexBytes, xprv.Bytes())
- return hexBytes, nil
-}
-
-func (xprv XPrv) Bytes() []byte {
- return xprv[:]
-}
-
-func (xpub *XPub) UnmarshalText(inp []byte) error {
- if len(inp) != 2*extendedPublicKeySize {
- return ErrBadKeyStr
- }
- _, err := hex.Decode(xpub[:], inp)
- return err
-}
-
-func (xpub XPub) String() string {
- return hex.EncodeToString(xpub.Bytes())
-}
-
-func (xprv *XPrv) UnmarshalText(inp []byte) error {
- if len(inp) != 2*extendedPrivateKeySize {
- return ErrBadKeyStr
- }
- _, err := hex.Decode(xprv[:], inp)
- return err
-}
-
-func (xprv XPrv) String() string {
- return hex.EncodeToString(xprv.Bytes())
-}
+++ /dev/null
-package chainkd
-
-import (
- "bytes"
- "encoding/hex"
- "encoding/json"
- "reflect"
- "testing"
-)
-
-func TestMarshalingFuncs(t *testing.T) {
- xprv, err := NewXPrv(nil)
- if err != nil {
- t.Fatal(err)
- }
-
- want := make([]byte, hex.EncodedLen(len(xprv.Bytes())))
- hex.Encode(want, xprv.Bytes())
-
- got, err := json.Marshal(xprv)
- if err != nil {
- t.Fatal(err)
- }
- // First and last bytes are "
- if !reflect.DeepEqual(want, got[1:len(got)-1]) {
- t.Errorf("marshaling error: want = %+v, got = %+v", want, got)
- }
-
- secXprv := new(XPrv)
- err = json.Unmarshal(got, &secXprv)
- if err != nil {
- t.Fatal(err)
- }
- if !bytes.Equal(xprv[:], secXprv[:]) {
- t.Errorf("unmarshaling error: want = %+v, got = %+v", xprv, secXprv)
- }
-}
+++ /dev/null
-package chainkd
-
-import (
- "io"
-
- "github.com/bytom/crypto/ed25519"
-)
-
-// Utility functions
-
-func NewXKeys(r io.Reader) (xprv XPrv, xpub XPub, err error) {
- xprv, err = NewXPrv(r)
- if err != nil {
- return
- }
- return xprv, xprv.XPub(), nil
-}
-
-func XPubKeys(xpubs []XPub) []ed25519.PublicKey {
- res := make([]ed25519.PublicKey, 0, len(xpubs))
- for _, xpub := range xpubs {
- res = append(res, xpub.PublicKey())
- }
- return res
-}
-
-func DeriveXPubs(xpubs []XPub, path [][]byte) []XPub {
- res := make([]XPub, 0, len(xpubs))
- for _, xpub := range xpubs {
- d := xpub.Derive(path)
- res = append(res, d)
- }
- return res
-}
+++ /dev/null
-package ecmath
-
-import (
- "crypto/subtle"
-
- "github.com/bytom/crypto/ed25519/internal/edwards25519"
-)
-
-// Point is a point on the ed25519 curve.
-type Point edwards25519.ExtendedGroupElement
-
-// ZeroPoint is the zero point on the ed25519 curve (not the zero value of Point).
-var ZeroPoint Point
-
-// Add adds the points in x and y, storing the result in z and
-// returning that. Any or all of x, y, and z may be the same pointers.
-func (z *Point) Add(x, y *Point) *Point {
- var y2 edwards25519.CachedGroupElement
- (*edwards25519.ExtendedGroupElement)(y).ToCached(&y2)
-
- var z2 edwards25519.CompletedGroupElement
- edwards25519.GeAdd(&z2, (*edwards25519.ExtendedGroupElement)(x), &y2)
-
- z2.ToExtended((*edwards25519.ExtendedGroupElement)(z))
- return z
-}
-
-// Sub subtracts y from x, storing the result in z and
-// returning that. Any or all of x, y, and z may be the same pointers.
-func (z *Point) Sub(x, y *Point) *Point {
- var y2 edwards25519.CachedGroupElement
- (*edwards25519.ExtendedGroupElement)(y).ToCached(&y2)
-
- var z2 edwards25519.CompletedGroupElement
- edwards25519.GeSub(&z2, (*edwards25519.ExtendedGroupElement)(x), &y2)
-
- z2.ToExtended((*edwards25519.ExtendedGroupElement)(z))
- return z
-}
-
-// ScMul multiplies the EC point x by the scalar y, placing the result
-// in z and returning that. X and z may be the same pointer.
-func (z *Point) ScMul(x *Point, y *Scalar) *Point {
- return z.ScMulAdd(x, y, &Zero)
-}
-
-// ScMulBase multiplies the ed25519 base point by x and places the
-// result in z, returning that.
-func (z *Point) ScMulBase(x *Scalar) *Point {
- edwards25519.GeScalarMultBase((*edwards25519.ExtendedGroupElement)(z), (*[32]byte)(x))
- return z
-}
-
-// ScMulAdd computes xa+yB, where B is the ed25519 base point, and
-// places the result in z, returning that.
-func (z *Point) ScMulAdd(a *Point, x, y *Scalar) *Point {
- // TODO: replace with constant-time implementation to avoid
- // sidechannel attacks
-
- var p edwards25519.ProjectiveGroupElement
- edwards25519.GeDoubleScalarMultVartime(&p, (*[32]byte)(x), (*edwards25519.ExtendedGroupElement)(a), (*[32]byte)(y))
-
- var buf [32]byte
- p.ToBytes(&buf)
- // TODO(bobg): double-check that it's OK to ignore the return value
- // from ExtendedGroupElement.FromBytes here. (It's a bool indicating
- // that its input represented a legal value.)
- (*edwards25519.ExtendedGroupElement)(z).FromBytes(&buf)
- return z
-}
-
-func (z *Point) Encode() [32]byte {
- var e [32]byte
- (*edwards25519.ExtendedGroupElement)(z).ToBytes(&e)
- return e
-}
-
-func (z *Point) Decode(e [32]byte) (*Point, bool) {
- ok := (*edwards25519.ExtendedGroupElement)(z).FromBytes(&e)
- return z, ok
-}
-
-func (z *Point) ConstTimeEqual(x *Point) bool {
- xe := x.Encode()
- ze := z.Encode()
- return subtle.ConstantTimeCompare(xe[:], ze[:]) == 1
-}
-
-func init() {
- (*edwards25519.ExtendedGroupElement)(&ZeroPoint).Zero()
-}
+++ /dev/null
-package ecmath
-
-import "testing"
-
-// base is the ed25519 base point
-var base Point
-
-func init() {
- base.ScMulBase(&One)
-}
-
-func TestBasePointArith(t *testing.T) {
- var base1 Point
- base1.ScMul(&base, &One)
- if !base.ConstTimeEqual(&base1) {
- ebase := base.Encode()
- ebase1 := base1.Encode()
- t.Errorf("base [%x] != 1*base [%x]", ebase[:], ebase1[:])
- }
-
- Two := One
- Two.Add(&Two, &One)
-
- base2a := base
- base2a.Add(&base2a, &base)
-
- base2b := base
- base2b.ScMul(&base2b, &Two)
-
- if !base2a.ConstTimeEqual(&base2b) {
- ebase2a := base2a.Encode()
- ebase2b := base2b.Encode()
- t.Errorf("base+base [%x] != 2*base [%x] (1)", ebase2a[:], ebase2b[:])
- }
-
- var base2c Point
- base2c.ScMulBase(&Two)
-
- if !base2a.ConstTimeEqual(&base2c) {
- ebase2a := base2a.Encode()
- ebase2c := base2c.Encode()
- t.Errorf("base+base [%x] != 2*base [%x] (2)", ebase2a[:], ebase2c[:])
- }
-}
+++ /dev/null
-package ecmath
-
-import (
- "crypto/subtle"
-
- "github.com/bytom/crypto/ed25519/internal/edwards25519"
-)
-
-// Scalar is a 256-bit little-endian scalar.
-type Scalar [32]byte
-
-var (
- // Zero is the number 0.
- Zero Scalar
-
- // One is the number 1.
- One = Scalar{1}
-
- // NegOne is the number -1 mod L
- NegOne = Scalar{
- 0xec, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
- 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
- }
-
- // L is the subgroup order:
- // 2^252 + 27742317777372353535851937790883648493
- L = Scalar{
- 0xed, 0xd3, 0xf5, 0x5c, 0x1a, 0x63, 0x12, 0x58,
- 0xd6, 0x9c, 0xf7, 0xa2, 0xde, 0xf9, 0xde, 0x14,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10,
- }
-)
-
-// Add computes x+y (mod L) and places the result in z, returning
-// that. Any or all of x, y, and z may be the same pointer.
-func (z *Scalar) Add(x, y *Scalar) *Scalar {
- return z.MulAdd(x, &One, y)
-}
-
-// Sub computes x-y (mod L) and places the result in z, returning
-// that. Any or all of x, y, and z may be the same pointer.
-func (z *Scalar) Sub(x, y *Scalar) *Scalar {
- return z.MulAdd(y, &NegOne, x)
-}
-
-// Neg negates x (mod L) and places the result in z, returning that. X
-// and z may be the same pointer.
-func (z *Scalar) Neg(x *Scalar) *Scalar {
- return z.MulAdd(x, &NegOne, &Zero)
-}
-
-// MulAdd computes ab+c (mod L) and places the result in z, returning
-// that. Any or all of the pointers may be the same.
-func (z *Scalar) MulAdd(a, b, c *Scalar) *Scalar {
- edwards25519.ScMulAdd((*[32]byte)(z), (*[32]byte)(a), (*[32]byte)(b), (*[32]byte)(c))
- return z
-}
-
-func (z *Scalar) Equal(x *Scalar) bool {
- return subtle.ConstantTimeCompare(x[:], z[:]) == 1
-}
-
-// Prune performs the pruning operation in-place.
-func (z *Scalar) Prune() {
- z[0] &= 248
- z[31] &= 127
- z[31] |= 64
-}
-
-// Reduce takes a 512-bit scalar and reduces it mod L, placing the
-// result in z and returning that.
-func (z *Scalar) Reduce(x *[64]byte) *Scalar {
- edwards25519.ScReduce((*[32]byte)(z), x)
- return z
-}
+++ /dev/null
-package randentropy
-
-import (
- crand "crypto/rand"
- "io"
-)
-
-var Reader io.Reader = &randEntropy{}
-
-type randEntropy struct {
-}
-
-func (*randEntropy) Read(bytes []byte) (n int, err error) {
- readBytes := GetEntropyCSPRNG(len(bytes))
- copy(bytes, readBytes)
- return len(bytes), nil
-}
-
-func GetEntropyCSPRNG(n int) []byte {
- mainBuff := make([]byte, n)
- _, err := io.ReadFull(crand.Reader, mainBuff)
- if err != nil {
- panic("reading from crypto/rand failed: " + err.Error())
- }
- return mainBuff
-}
+++ /dev/null
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package scrypt_test
-
-import (
- "encoding/base64"
- "fmt"
- "log"
-
- "golang.org/x/crypto/scrypt"
-)
-
-func Example() {
- // DO NOT use this salt value; generate your own random salt. 8 bytes is
- // a good length.
- salt := []byte{0xc8, 0x28, 0xf2, 0x58, 0xa7, 0x6a, 0xad, 0x7b}
-
- dk, err := scrypt.Key([]byte("some password"), salt, 1<<15, 8, 1, 32)
- if err != nil {
- log.Fatal(err)
- }
- fmt.Println(base64.StdEncoding.EncodeToString(dk))
- // Output: lGnMz8io0AUkfzn6Pls1qX20Vs7PGN6sbYQ2TQgY12M=
-}
+++ /dev/null
-// Package scrypt implements the scrypt key derivation function as defined in
-// Colin Percival's paper "Stronger Key Derivation via Sequential Memory-Hard
-// Functions" (https://www.tarsnap.com/scrypt/scrypt.pdf).
-
-// import "golang.org/x/crypto/scrypt"
-package scrypt
-
-import (
- "crypto/sha256"
- "errors"
-
- "golang.org/x/crypto/pbkdf2"
-)
-
-const maxInt = int(^uint(0) >> 1)
-
-// blockCopy copies n numbers from src into dst.
-func blockCopy(dst, src []uint32, n int) {
- copy(dst, src[:n])
-}
-
-// blockXOR XORs numbers from dst with n numbers from src.
-func blockXOR(dst, src []uint32, n int) {
- for i, v := range src[:n] {
- dst[i] ^= v
- }
-}
-
-// salsaXOR applies Salsa20/8 to the XOR of 16 numbers from tmp and in,
-// and puts the result into both both tmp and out.
-func salsaXOR(tmp *[16]uint32, in, out []uint32) {
- w0 := tmp[0] ^ in[0]
- w1 := tmp[1] ^ in[1]
- w2 := tmp[2] ^ in[2]
- w3 := tmp[3] ^ in[3]
- w4 := tmp[4] ^ in[4]
- w5 := tmp[5] ^ in[5]
- w6 := tmp[6] ^ in[6]
- w7 := tmp[7] ^ in[7]
- w8 := tmp[8] ^ in[8]
- w9 := tmp[9] ^ in[9]
- w10 := tmp[10] ^ in[10]
- w11 := tmp[11] ^ in[11]
- w12 := tmp[12] ^ in[12]
- w13 := tmp[13] ^ in[13]
- w14 := tmp[14] ^ in[14]
- w15 := tmp[15] ^ in[15]
-
- x0, x1, x2, x3, x4, x5, x6, x7, x8 := w0, w1, w2, w3, w4, w5, w6, w7, w8
- x9, x10, x11, x12, x13, x14, x15 := w9, w10, w11, w12, w13, w14, w15
-
- for i := 0; i < 8; i += 2 {
- u := x0 + x12
- x4 ^= u<<7 | u>>(32-7)
- u = x4 + x0
- x8 ^= u<<9 | u>>(32-9)
- u = x8 + x4
- x12 ^= u<<13 | u>>(32-13)
- u = x12 + x8
- x0 ^= u<<18 | u>>(32-18)
-
- u = x5 + x1
- x9 ^= u<<7 | u>>(32-7)
- u = x9 + x5
- x13 ^= u<<9 | u>>(32-9)
- u = x13 + x9
- x1 ^= u<<13 | u>>(32-13)
- u = x1 + x13
- x5 ^= u<<18 | u>>(32-18)
-
- u = x10 + x6
- x14 ^= u<<7 | u>>(32-7)
- u = x14 + x10
- x2 ^= u<<9 | u>>(32-9)
- u = x2 + x14
- x6 ^= u<<13 | u>>(32-13)
- u = x6 + x2
- x10 ^= u<<18 | u>>(32-18)
-
- u = x15 + x11
- x3 ^= u<<7 | u>>(32-7)
- u = x3 + x15
- x7 ^= u<<9 | u>>(32-9)
- u = x7 + x3
- x11 ^= u<<13 | u>>(32-13)
- u = x11 + x7
- x15 ^= u<<18 | u>>(32-18)
-
- u = x0 + x3
- x1 ^= u<<7 | u>>(32-7)
- u = x1 + x0
- x2 ^= u<<9 | u>>(32-9)
- u = x2 + x1
- x3 ^= u<<13 | u>>(32-13)
- u = x3 + x2
- x0 ^= u<<18 | u>>(32-18)
-
- u = x5 + x4
- x6 ^= u<<7 | u>>(32-7)
- u = x6 + x5
- x7 ^= u<<9 | u>>(32-9)
- u = x7 + x6
- x4 ^= u<<13 | u>>(32-13)
- u = x4 + x7
- x5 ^= u<<18 | u>>(32-18)
-
- u = x10 + x9
- x11 ^= u<<7 | u>>(32-7)
- u = x11 + x10
- x8 ^= u<<9 | u>>(32-9)
- u = x8 + x11
- x9 ^= u<<13 | u>>(32-13)
- u = x9 + x8
- x10 ^= u<<18 | u>>(32-18)
-
- u = x15 + x14
- x12 ^= u<<7 | u>>(32-7)
- u = x12 + x15
- x13 ^= u<<9 | u>>(32-9)
- u = x13 + x12
- x14 ^= u<<13 | u>>(32-13)
- u = x14 + x13
- x15 ^= u<<18 | u>>(32-18)
- }
- x0 += w0
- x1 += w1
- x2 += w2
- x3 += w3
- x4 += w4
- x5 += w5
- x6 += w6
- x7 += w7
- x8 += w8
- x9 += w9
- x10 += w10
- x11 += w11
- x12 += w12
- x13 += w13
- x14 += w14
- x15 += w15
-
- out[0], tmp[0] = x0, x0
- out[1], tmp[1] = x1, x1
- out[2], tmp[2] = x2, x2
- out[3], tmp[3] = x3, x3
- out[4], tmp[4] = x4, x4
- out[5], tmp[5] = x5, x5
- out[6], tmp[6] = x6, x6
- out[7], tmp[7] = x7, x7
- out[8], tmp[8] = x8, x8
- out[9], tmp[9] = x9, x9
- out[10], tmp[10] = x10, x10
- out[11], tmp[11] = x11, x11
- out[12], tmp[12] = x12, x12
- out[13], tmp[13] = x13, x13
- out[14], tmp[14] = x14, x14
- out[15], tmp[15] = x15, x15
-}
-
-func blockMix(tmp *[16]uint32, in, out []uint32, r int) {
- blockCopy(tmp[:], in[(2*r-1)*16:], 16)
- for i := 0; i < 2*r; i += 2 {
- salsaXOR(tmp, in[i*16:], out[i*8:])
- salsaXOR(tmp, in[i*16+16:], out[i*8+r*16:])
- }
-}
-
-func integer(b []uint32, r int) uint64 {
- j := (2*r - 1) * 16
- return uint64(b[j]) | uint64(b[j+1])<<32
-}
-
-func smix(b []byte, r, N int, v, xy []uint32) {
- var tmp [16]uint32
- x := xy
- y := xy[32*r:]
-
- j := 0
- for i := 0; i < 32*r; i++ {
- x[i] = uint32(b[j]) | uint32(b[j+1])<<8 | uint32(b[j+2])<<16 | uint32(b[j+3])<<24
- j += 4
- }
- for i := 0; i < N; i += 2 {
- blockCopy(v[i*(32*r):], x, 32*r)
- blockMix(&tmp, x, y, r)
-
- blockCopy(v[(i+1)*(32*r):], y, 32*r)
- blockMix(&tmp, y, x, r)
- }
- for i := 0; i < N; i += 2 {
- j := int(integer(x, r) & uint64(N-1))
- blockXOR(x, v[j*(32*r):], 32*r)
- blockMix(&tmp, x, y, r)
-
- j = int(integer(y, r) & uint64(N-1))
- blockXOR(y, v[j*(32*r):], 32*r)
- blockMix(&tmp, y, x, r)
- }
- j = 0
- for _, v := range x[:32*r] {
- b[j+0] = byte(v >> 0)
- b[j+1] = byte(v >> 8)
- b[j+2] = byte(v >> 16)
- b[j+3] = byte(v >> 24)
- j += 4
- }
-}
-
-// Key derives a key from the password, salt, and cost parameters, returning
-// a byte slice of length keyLen that can be used as cryptographic key.
-//
-// N is a CPU/memory cost parameter, which must be a power of two greater than 1.
-// r and p must satisfy r * p < 2³⁰. If the parameters do not satisfy the
-// limits, the function returns a nil byte slice and an error.
-//
-// For example, you can get a derived key for e.g. AES-256 (which needs a
-// 32-byte key) by doing:
-//
-// dk, err := scrypt.Key([]byte("some password"), salt, 16384, 8, 1, 32)
-//
-// The recommended parameters for interactive logins as of 2017 are N=32768, r=8
-// and p=1. The parameters N, r, and p should be increased as memory latency and
-// CPU parallelism increases; consider setting N to the highest power of 2 you
-// can derive within 100 milliseconds. Remember to get a good random salt.
-func Key(password, salt []byte, N, r, p, keyLen int) ([]byte, error) {
- if N <= 1 || N&(N-1) != 0 {
- return nil, errors.New("scrypt: N must be > 1 and a power of 2")
- }
- if uint64(r)*uint64(p) >= 1<<30 || r > maxInt/128/p || r > maxInt/256 || N > maxInt/128/r {
- return nil, errors.New("scrypt: parameters are too large")
- }
-
- xy := make([]uint32, 64*r)
- v := make([]uint32, 32*N*r)
- b := pbkdf2.Key(password, salt, 1, p*128*r, sha256.New)
-
- for i := 0; i < p; i++ {
- smix(b[i*128*r:], r, N, v, xy)
- }
-
- return pbkdf2.Key(password, b, 1, keyLen, sha256.New), nil
-}
+++ /dev/null
-// Copyright 2012 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package scrypt
-
-import (
- "bytes"
- "testing"
-)
-
-type testVector struct {
- password string
- salt string
- N, r, p int
- output []byte
-}
-
-var good = []testVector{
- {
- "password",
- "salt",
- 2, 10, 10,
- []byte{
- 0x48, 0x2c, 0x85, 0x8e, 0x22, 0x90, 0x55, 0xe6, 0x2f,
- 0x41, 0xe0, 0xec, 0x81, 0x9a, 0x5e, 0xe1, 0x8b, 0xdb,
- 0x87, 0x25, 0x1a, 0x53, 0x4f, 0x75, 0xac, 0xd9, 0x5a,
- 0xc5, 0xe5, 0xa, 0xa1, 0x5f,
- },
- },
- {
- "password",
- "salt",
- 16, 100, 100,
- []byte{
- 0x88, 0xbd, 0x5e, 0xdb, 0x52, 0xd1, 0xdd, 0x0, 0x18,
- 0x87, 0x72, 0xad, 0x36, 0x17, 0x12, 0x90, 0x22, 0x4e,
- 0x74, 0x82, 0x95, 0x25, 0xb1, 0x8d, 0x73, 0x23, 0xa5,
- 0x7f, 0x91, 0x96, 0x3c, 0x37,
- },
- },
- {
- "this is a long \000 password",
- "and this is a long \000 salt",
- 16384, 8, 1,
- []byte{
- 0xc3, 0xf1, 0x82, 0xee, 0x2d, 0xec, 0x84, 0x6e, 0x70,
- 0xa6, 0x94, 0x2f, 0xb5, 0x29, 0x98, 0x5a, 0x3a, 0x09,
- 0x76, 0x5e, 0xf0, 0x4c, 0x61, 0x29, 0x23, 0xb1, 0x7f,
- 0x18, 0x55, 0x5a, 0x37, 0x07, 0x6d, 0xeb, 0x2b, 0x98,
- 0x30, 0xd6, 0x9d, 0xe5, 0x49, 0x26, 0x51, 0xe4, 0x50,
- 0x6a, 0xe5, 0x77, 0x6d, 0x96, 0xd4, 0x0f, 0x67, 0xaa,
- 0xee, 0x37, 0xe1, 0x77, 0x7b, 0x8a, 0xd5, 0xc3, 0x11,
- 0x14, 0x32, 0xbb, 0x3b, 0x6f, 0x7e, 0x12, 0x64, 0x40,
- 0x18, 0x79, 0xe6, 0x41, 0xae,
- },
- },
- {
- "p",
- "s",
- 2, 1, 1,
- []byte{
- 0x48, 0xb0, 0xd2, 0xa8, 0xa3, 0x27, 0x26, 0x11, 0x98,
- 0x4c, 0x50, 0xeb, 0xd6, 0x30, 0xaf, 0x52,
- },
- },
-
- {
- "",
- "",
- 16, 1, 1,
- []byte{
- 0x77, 0xd6, 0x57, 0x62, 0x38, 0x65, 0x7b, 0x20, 0x3b,
- 0x19, 0xca, 0x42, 0xc1, 0x8a, 0x04, 0x97, 0xf1, 0x6b,
- 0x48, 0x44, 0xe3, 0x07, 0x4a, 0xe8, 0xdf, 0xdf, 0xfa,
- 0x3f, 0xed, 0xe2, 0x14, 0x42, 0xfc, 0xd0, 0x06, 0x9d,
- 0xed, 0x09, 0x48, 0xf8, 0x32, 0x6a, 0x75, 0x3a, 0x0f,
- 0xc8, 0x1f, 0x17, 0xe8, 0xd3, 0xe0, 0xfb, 0x2e, 0x0d,
- 0x36, 0x28, 0xcf, 0x35, 0xe2, 0x0c, 0x38, 0xd1, 0x89,
- 0x06,
- },
- },
- {
- "password",
- "NaCl",
- 1024, 8, 16,
- []byte{
- 0xfd, 0xba, 0xbe, 0x1c, 0x9d, 0x34, 0x72, 0x00, 0x78,
- 0x56, 0xe7, 0x19, 0x0d, 0x01, 0xe9, 0xfe, 0x7c, 0x6a,
- 0xd7, 0xcb, 0xc8, 0x23, 0x78, 0x30, 0xe7, 0x73, 0x76,
- 0x63, 0x4b, 0x37, 0x31, 0x62, 0x2e, 0xaf, 0x30, 0xd9,
- 0x2e, 0x22, 0xa3, 0x88, 0x6f, 0xf1, 0x09, 0x27, 0x9d,
- 0x98, 0x30, 0xda, 0xc7, 0x27, 0xaf, 0xb9, 0x4a, 0x83,
- 0xee, 0x6d, 0x83, 0x60, 0xcb, 0xdf, 0xa2, 0xcc, 0x06,
- 0x40,
- },
- },
- {
- "pleaseletmein", "SodiumChloride",
- 16384, 8, 1,
- []byte{
- 0x70, 0x23, 0xbd, 0xcb, 0x3a, 0xfd, 0x73, 0x48, 0x46,
- 0x1c, 0x06, 0xcd, 0x81, 0xfd, 0x38, 0xeb, 0xfd, 0xa8,
- 0xfb, 0xba, 0x90, 0x4f, 0x8e, 0x3e, 0xa9, 0xb5, 0x43,
- 0xf6, 0x54, 0x5d, 0xa1, 0xf2, 0xd5, 0x43, 0x29, 0x55,
- 0x61, 0x3f, 0x0f, 0xcf, 0x62, 0xd4, 0x97, 0x05, 0x24,
- 0x2a, 0x9a, 0xf9, 0xe6, 0x1e, 0x85, 0xdc, 0x0d, 0x65,
- 0x1e, 0x40, 0xdf, 0xcf, 0x01, 0x7b, 0x45, 0x57, 0x58,
- 0x87,
- },
- },
- /*
- // Disabled: needs 1 GiB RAM and takes too long for a simple test.
- {
- "pleaseletmein", "SodiumChloride",
- 1048576, 8, 1,
- []byte{
- 0x21, 0x01, 0xcb, 0x9b, 0x6a, 0x51, 0x1a, 0xae, 0xad,
- 0xdb, 0xbe, 0x09, 0xcf, 0x70, 0xf8, 0x81, 0xec, 0x56,
- 0x8d, 0x57, 0x4a, 0x2f, 0xfd, 0x4d, 0xab, 0xe5, 0xee,
- 0x98, 0x20, 0xad, 0xaa, 0x47, 0x8e, 0x56, 0xfd, 0x8f,
- 0x4b, 0xa5, 0xd0, 0x9f, 0xfa, 0x1c, 0x6d, 0x92, 0x7c,
- 0x40, 0xf4, 0xc3, 0x37, 0x30, 0x40, 0x49, 0xe8, 0xa9,
- 0x52, 0xfb, 0xcb, 0xf4, 0x5c, 0x6f, 0xa7, 0x7a, 0x41,
- 0xa4,
- },
- },
- */
-}
-
-var bad = []testVector{
- {"p", "s", 0, 1, 1, nil}, // N == 0
- {"p", "s", 1, 1, 1, nil}, // N == 1
- {"p", "s", 7, 8, 1, nil}, // N is not power of 2
- {"p", "s", 16, maxInt / 2, maxInt / 2, nil}, // p * r too large
-}
-
-func TestKey(t *testing.T) {
- for i, v := range good {
- k, err := Key([]byte(v.password), []byte(v.salt), v.N, v.r, v.p, len(v.output))
- if err != nil {
- t.Errorf("%d: got unexpected error: %s", i, err)
- }
- if !bytes.Equal(k, v.output) {
- t.Errorf("%d: expected %x, got %x", i, v.output, k)
- }
- }
- for i, v := range bad {
- _, err := Key([]byte(v.password), []byte(v.salt), v.N, v.r, v.p, 32)
- if err == nil {
- t.Errorf("%d: expected error, got nil", i)
- }
- }
-}
-
-var sink []byte
-
-func BenchmarkKey(b *testing.B) {
- for i := 0; i < b.N; i++ {
- sink, _ = Key([]byte("password"), []byte("salt"), 1<<15, 8, 1, 64)
- }
-}
+++ /dev/null
-package scrypt
-
-// Smix create tensority cache
-// Some value is fixed: r = 1, N = 1024.
-func Smix(b []byte, v []uint32) {
- xy := make([]uint32, 64)
- smix(b, 1, 1024, v, xy)
-}
+++ /dev/null
-package sm2
-
-import (
- "encoding/pem"
- "errors"
- "io/ioutil"
- "os"
- "runtime"
- "sync"
-)
-
-// Possible certificate files; stop after finding one.
-var certFiles = []string{
- "/etc/ssl/certs/ca-certificates.crt", // Debian/Ubuntu/Gentoo etc.
- "/etc/pki/tls/certs/ca-bundle.crt", // Fedora/RHEL 6
- "/etc/ssl/ca-bundle.pem", // OpenSUSE
- "/etc/pki/tls/cacert.pem", // OpenELEC
- "/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem", // CentOS/RHEL 7
-}
-
-// CertPool is a set of certificates.
-type CertPool struct {
- bySubjectKeyId map[string][]int
- byName map[string][]int
- certs []*Certificate
-}
-
-// NewCertPool returns a new, empty CertPool.
-func NewCertPool() *CertPool {
- return &CertPool{
- bySubjectKeyId: make(map[string][]int),
- byName: make(map[string][]int),
- }
-}
-
-// Possible directories with certificate files; stop after successfully
-// reading at least one file from a directory.
-var certDirectories = []string{
- "/etc/ssl/certs", // SLES10/SLES11, https://golang.org/issue/12139
- "/system/etc/security/cacerts", // Android
-}
-
-var (
- once sync.Once
- systemRoots *CertPool
- systemRootsErr error
-)
-
-func systemRootsPool() *CertPool {
- once.Do(initSystemRoots)
- return systemRoots
-}
-
-func initSystemRoots() {
- systemRoots, systemRootsErr = loadSystemRoots()
-}
-
-func (c *Certificate) systemVerify(opts *VerifyOptions) (chains [][]*Certificate, err error) {
- return nil, nil
-}
-
-func loadSystemRoots() (*CertPool, error) {
- roots := NewCertPool()
- var firstErr error
- for _, file := range certFiles {
- data, err := ioutil.ReadFile(file)
- if err == nil {
- roots.AppendCertsFromPEM(data)
- return roots, nil
- }
- if firstErr == nil && !os.IsNotExist(err) {
- firstErr = err
- }
- }
-
- for _, directory := range certDirectories {
- fis, err := ioutil.ReadDir(directory)
- if err != nil {
- if firstErr == nil && !os.IsNotExist(err) {
- firstErr = err
- }
- continue
- }
- rootsAdded := false
- for _, fi := range fis {
- data, err := ioutil.ReadFile(directory + "/" + fi.Name())
- if err == nil && roots.AppendCertsFromPEM(data) {
- rootsAdded = true
- }
- }
- if rootsAdded {
- return roots, nil
- }
- }
-
- return nil, firstErr
-}
-
-// SystemCertPool returns a copy of the system cert pool.
-//
-// Any mutations to the returned pool are not written to disk and do
-// not affect any other pool.
-func SystemCertPool() (*CertPool, error) {
- if runtime.GOOS == "windows" {
- // Issue 16736, 18609:
- return nil, errors.New("crypto/x509: system root pool is not available on Windows")
- }
-
- return loadSystemRoots()
-}
-
-// findVerifiedParents attempts to find certificates in s which have signed the
-// given certificate. If any candidates were rejected then errCert will be set
-// to one of them, arbitrarily, and err will contain the reason that it was
-// rejected.
-func (s *CertPool) findVerifiedParents(cert *Certificate) (parents []int, errCert *Certificate, err error) {
- if s == nil {
- return
- }
- var candidates []int
-
- if len(cert.AuthorityKeyId) > 0 {
- candidates = s.bySubjectKeyId[string(cert.AuthorityKeyId)]
- }
- if len(candidates) == 0 {
- candidates = s.byName[string(cert.RawIssuer)]
- }
-
- for _, c := range candidates {
- if err = cert.CheckSignatureFrom(s.certs[c]); err == nil {
- parents = append(parents, c)
- } else {
- errCert = s.certs[c]
- }
- }
-
- return
-}
-
-func (s *CertPool) contains(cert *Certificate) bool {
- if s == nil {
- return false
- }
-
- candidates := s.byName[string(cert.RawSubject)]
- for _, c := range candidates {
- if s.certs[c].Equal(cert) {
- return true
- }
- }
-
- return false
-}
-
-// AddCert adds a certificate to a pool.
-func (s *CertPool) AddCert(cert *Certificate) {
- if cert == nil {
- panic("adding nil Certificate to CertPool")
- }
-
- // Check that the certificate isn't being added twice.
- if s.contains(cert) {
- return
- }
-
- n := len(s.certs)
- s.certs = append(s.certs, cert)
-
- if len(cert.SubjectKeyId) > 0 {
- keyId := string(cert.SubjectKeyId)
- s.bySubjectKeyId[keyId] = append(s.bySubjectKeyId[keyId], n)
- }
- name := string(cert.RawSubject)
- s.byName[name] = append(s.byName[name], n)
-}
-
-// AppendCertsFromPEM attempts to parse a series of PEM encoded certificates.
-// It appends any certificates found to s and reports whether any certificates
-// were successfully parsed.
-//
-// On many Linux systems, /etc/ssl/cert.pem will contain the system wide set
-// of root CAs in a format suitable for this function.
-func (s *CertPool) AppendCertsFromPEM(pemCerts []byte) (ok bool) {
- for len(pemCerts) > 0 {
- var block *pem.Block
- block, pemCerts = pem.Decode(pemCerts)
- if block == nil {
- break
- }
- if block.Type != "CERTIFICATE" || len(block.Headers) != 0 {
- continue
- }
-
- cert, err := ParseCertificate(block.Bytes)
- if err != nil {
- continue
- }
-
- s.AddCert(cert)
- ok = true
- }
-
- return
-}
-
-// Subjects returns a list of the DER-encoded subjects of
-// all of the certificates in the pool.
-func (s *CertPool) Subjects() [][]byte {
- res := make([][]byte, len(s.certs))
- for i, c := range s.certs {
- res[i] = c.RawSubject
- }
- return res
-}
+++ /dev/null
-package sm2
-
-import (
- "crypto/elliptic"
- "math/big"
- "sync"
-)
-
-/** 学习标准库p256的优化方法实现sm2的快速版本
- * 标准库的p256的代码实现有些晦涩难懂,当然sm2的同样如此,有兴趣的大家可以研究研究,最后神兽压阵。。。
- *
- * ━━━━━━animal━━━━━━
- * ┏┓ ┏┓
- * ┏┛┻━━━┛┻┓
- * ┃ ┃
- * ┃ ━ ┃
- * ┃ ┳┛ ┗┳ ┃
- * ┃ ┃
- * ┃ ┻ ┃
- * ┃ ┃
- * ┗━┓ ┏━┛
- * ┃ ┃
- * ┃ ┃
- * ┃ ┗━━━┓
- * ┃ ┣┓
- * ┃ ┏┛
- * ┗┓┓┏━┳┓┏┛
- * ┃┫┫ ┃┫┫
- * ┗┻┛ ┗┻┛
- *
- * ━━━━━Kawaii ━━━━━━
- */
-
-type sm2P256Curve struct {
- RInverse *big.Int
- *elliptic.CurveParams
- a, b, gx, gy sm2P256FieldElement
-}
-
-var initonce sync.Once
-var sm2P256 sm2P256Curve
-
-type sm2P256FieldElement [9]uint32
-type sm2P256LargeFieldElement [17]uint64
-
-const (
- bottom28Bits = 0xFFFFFFF
- bottom29Bits = 0x1FFFFFFF
-)
-
-func initP256Sm2() {
- sm2P256.CurveParams = &elliptic.CurveParams{Name: "SM2-P-256"} // sm2
- A, _ := new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFC", 16)
- //SM2椭 椭 圆 曲 线 公 钥 密 码 算 法 推 荐 曲 线 参 数
- sm2P256.P, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF00000000FFFFFFFFFFFFFFFF", 16)
- sm2P256.N, _ = new(big.Int).SetString("FFFFFFFEFFFFFFFFFFFFFFFFFFFFFFFF7203DF6B21C6052B53BBF40939D54123", 16)
- sm2P256.B, _ = new(big.Int).SetString("28E9FA9E9D9F5E344D5A9E4BCF6509A7F39789F515AB8F92DDBCBD414D940E93", 16)
- sm2P256.Gx, _ = new(big.Int).SetString("32C4AE2C1F1981195F9904466A39C9948FE30BBFF2660BE1715A4589334C74C7", 16)
- sm2P256.Gy, _ = new(big.Int).SetString("BC3736A2F4F6779C59BDCEE36B692153D0A9877CC62A474002DF32E52139F0A0", 16)
- sm2P256.RInverse, _ = new(big.Int).SetString("7ffffffd80000002fffffffe000000017ffffffe800000037ffffffc80000002", 16)
- sm2P256.BitSize = 256
- sm2P256FromBig(&sm2P256.a, A)
- sm2P256FromBig(&sm2P256.gx, sm2P256.Gx)
- sm2P256FromBig(&sm2P256.gy, sm2P256.Gy)
- sm2P256FromBig(&sm2P256.b, sm2P256.B)
-}
-
-func P256Sm2() elliptic.Curve {
- initonce.Do(initP256Sm2)
- return sm2P256
-}
-
-func (curve sm2P256Curve) Params() *elliptic.CurveParams {
- return sm2P256.CurveParams
-}
-
-// y^2 = x^3 + ax + b
-func (curve sm2P256Curve) IsOnCurve(X, Y *big.Int) bool {
- var a, x, y, y2, x3 sm2P256FieldElement
-
- sm2P256FromBig(&x, X)
- sm2P256FromBig(&y, Y)
-
- sm2P256Square(&x3, &x) // x3 = x ^ 2
- sm2P256Mul(&x3, &x3, &x) // x3 = x ^ 2 * x
- sm2P256Mul(&a, &curve.a, &x) // a = a * x
- sm2P256Add(&x3, &x3, &a)
- sm2P256Add(&x3, &x3, &curve.b)
-
- sm2P256Square(&y2, &y) // y2 = y ^ 2
- return sm2P256ToBig(&x3).Cmp(sm2P256ToBig(&y2)) == 0
-}
-
-func zForAffine(x, y *big.Int) *big.Int {
- z := new(big.Int)
- if x.Sign() != 0 || y.Sign() != 0 {
- z.SetInt64(1)
- }
- return z
-}
-
-func (curve sm2P256Curve) Add(x1, y1, x2, y2 *big.Int) (*big.Int, *big.Int) {
- var X1, Y1, Z1, X2, Y2, Z2, X3, Y3, Z3 sm2P256FieldElement
-
- z1 := zForAffine(x1, y1)
- z2 := zForAffine(x2, y2)
- sm2P256FromBig(&X1, x1)
- sm2P256FromBig(&Y1, y1)
- sm2P256FromBig(&Z1, z1)
- sm2P256FromBig(&X2, x2)
- sm2P256FromBig(&Y2, y2)
- sm2P256FromBig(&Z2, z2)
- sm2P256PointAdd(&X1, &Y1, &Z1, &X2, &Y2, &Z2, &X3, &Y3, &Z3)
- return sm2P256ToAffine(&X3, &Y3, &Z3)
-}
-
-func (curve sm2P256Curve) Double(x1, y1 *big.Int) (*big.Int, *big.Int) {
- var X1, Y1, Z1 sm2P256FieldElement
-
- z1 := zForAffine(x1, y1)
- sm2P256FromBig(&X1, x1)
- sm2P256FromBig(&Y1, y1)
- sm2P256FromBig(&Z1, z1)
- sm2P256PointDouble(&X1, &Y1, &Z1, &X1, &Y1, &Z1)
- return sm2P256ToAffine(&X1, &Y1, &Z1)
-}
-
-func (curve sm2P256Curve) ScalarMult(x1, y1 *big.Int, k []byte) (*big.Int, *big.Int) {
- var scalarReversed [32]byte
- var X, Y, Z, X1, Y1 sm2P256FieldElement
-
- sm2P256FromBig(&X1, x1)
- sm2P256FromBig(&Y1, y1)
- sm2P256GetScalar(&scalarReversed, k)
- sm2P256ScalarMult(&X, &Y, &Z, &X1, &Y1, &scalarReversed)
- return sm2P256ToAffine(&X, &Y, &Z)
-}
-
-func (curve sm2P256Curve) ScalarBaseMult(k []byte) (*big.Int, *big.Int) {
- var scalarReversed [32]byte
- var X, Y, Z sm2P256FieldElement
-
- sm2P256GetScalar(&scalarReversed, k)
- sm2P256ScalarBaseMult(&X, &Y, &Z, &scalarReversed)
- return sm2P256ToAffine(&X, &Y, &Z)
-}
-
-var sm2P256Precomputed = [9 * 2 * 15 * 2]uint32{
- 0x830053d, 0x328990f, 0x6c04fe1, 0xc0f72e5, 0x1e19f3c, 0x666b093, 0x175a87b, 0xec38276, 0x222cf4b,
- 0x185a1bba, 0x354e593, 0x1295fac1, 0xf2bc469, 0x47c60fa, 0xc19b8a9, 0xf63533e, 0x903ae6b, 0xc79acba,
- 0x15b061a4, 0x33e020b, 0xdffb34b, 0xfcf2c8, 0x16582e08, 0x262f203, 0xfb34381, 0xa55452, 0x604f0ff,
- 0x41f1f90, 0xd64ced2, 0xee377bf, 0x75f05f0, 0x189467ae, 0xe2244e, 0x1e7700e8, 0x3fbc464, 0x9612d2e,
- 0x1341b3b8, 0xee84e23, 0x1edfa5b4, 0x14e6030, 0x19e87be9, 0x92f533c, 0x1665d96c, 0x226653e, 0xa238d3e,
- 0xf5c62c, 0x95bb7a, 0x1f0e5a41, 0x28789c3, 0x1f251d23, 0x8726609, 0xe918910, 0x8096848, 0xf63d028,
- 0x152296a1, 0x9f561a8, 0x14d376fb, 0x898788a, 0x61a95fb, 0xa59466d, 0x159a003d, 0x1ad1698, 0x93cca08,
- 0x1b314662, 0x706e006, 0x11ce1e30, 0x97b710, 0x172fbc0d, 0x8f50158, 0x11c7ffe7, 0xd182cce, 0xc6ad9e8,
- 0x12ea31b2, 0xc4e4f38, 0x175b0d96, 0xec06337, 0x75a9c12, 0xb001fdf, 0x93e82f5, 0x34607de, 0xb8035ed,
- 0x17f97924, 0x75cf9e6, 0xdceaedd, 0x2529924, 0x1a10c5ff, 0xb1a54dc, 0x19464d8, 0x2d1997, 0xde6a110,
- 0x1e276ee5, 0x95c510c, 0x1aca7c7a, 0xfe48aca, 0x121ad4d9, 0xe4132c6, 0x8239b9d, 0x40ea9cd, 0x816c7b,
- 0x632d7a4, 0xa679813, 0x5911fcf, 0x82b0f7c, 0x57b0ad5, 0xbef65, 0xd541365, 0x7f9921f, 0xc62e7a,
- 0x3f4b32d, 0x58e50e1, 0x6427aed, 0xdcdda67, 0xe8c2d3e, 0x6aa54a4, 0x18df4c35, 0x49a6a8e, 0x3cd3d0c,
- 0xd7adf2, 0xcbca97, 0x1bda5f2d, 0x3258579, 0x606b1e6, 0x6fc1b5b, 0x1ac27317, 0x503ca16, 0xa677435,
- 0x57bc73, 0x3992a42, 0xbab987b, 0xfab25eb, 0x128912a4, 0x90a1dc4, 0x1402d591, 0x9ffbcfc, 0xaa48856,
- 0x7a7c2dc, 0xcefd08a, 0x1b29bda6, 0xa785641, 0x16462d8c, 0x76241b7, 0x79b6c3b, 0x204ae18, 0xf41212b,
- 0x1f567a4d, 0xd6ce6db, 0xedf1784, 0x111df34, 0x85d7955, 0x55fc189, 0x1b7ae265, 0xf9281ac, 0xded7740,
- 0xf19468b, 0x83763bb, 0x8ff7234, 0x3da7df8, 0x9590ac3, 0xdc96f2a, 0x16e44896, 0x7931009, 0x99d5acc,
- 0x10f7b842, 0xaef5e84, 0xc0310d7, 0xdebac2c, 0x2a7b137, 0x4342344, 0x19633649, 0x3a10624, 0x4b4cb56,
- 0x1d809c59, 0xac007f, 0x1f0f4bcd, 0xa1ab06e, 0xc5042cf, 0x82c0c77, 0x76c7563, 0x22c30f3, 0x3bf1568,
- 0x7a895be, 0xfcca554, 0x12e90e4c, 0x7b4ab5f, 0x13aeb76b, 0x5887e2c, 0x1d7fe1e3, 0x908c8e3, 0x95800ee,
- 0xb36bd54, 0xf08905d, 0x4e73ae8, 0xf5a7e48, 0xa67cb0, 0x50e1067, 0x1b944a0a, 0xf29c83a, 0xb23cfb9,
- 0xbe1db1, 0x54de6e8, 0xd4707f2, 0x8ebcc2d, 0x2c77056, 0x1568ce4, 0x15fcc849, 0x4069712, 0xe2ed85f,
- 0x2c5ff09, 0x42a6929, 0x628e7ea, 0xbd5b355, 0xaf0bd79, 0xaa03699, 0xdb99816, 0x4379cef, 0x81d57b,
- 0x11237f01, 0xe2a820b, 0xfd53b95, 0x6beb5ee, 0x1aeb790c, 0xe470d53, 0x2c2cfee, 0x1c1d8d8, 0xa520fc4,
- 0x1518e034, 0xa584dd4, 0x29e572b, 0xd4594fc, 0x141a8f6f, 0x8dfccf3, 0x5d20ba3, 0x2eb60c3, 0x9f16eb0,
- 0x11cec356, 0xf039f84, 0x1b0990c1, 0xc91e526, 0x10b65bae, 0xf0616e8, 0x173fa3ff, 0xec8ccf9, 0xbe32790,
- 0x11da3e79, 0xe2f35c7, 0x908875c, 0xdacf7bd, 0x538c165, 0x8d1487f, 0x7c31aed, 0x21af228, 0x7e1689d,
- 0xdfc23ca, 0x24f15dc, 0x25ef3c4, 0x35248cd, 0x99a0f43, 0xa4b6ecc, 0xd066b3, 0x2481152, 0x37a7688,
- 0x15a444b6, 0xb62300c, 0x4b841b, 0xa655e79, 0xd53226d, 0xbeb348a, 0x127f3c2, 0xb989247, 0x71a277d,
- 0x19e9dfcb, 0xb8f92d0, 0xe2d226c, 0x390a8b0, 0x183cc462, 0x7bd8167, 0x1f32a552, 0x5e02db4, 0xa146ee9,
- 0x1a003957, 0x1c95f61, 0x1eeec155, 0x26f811f, 0xf9596ba, 0x3082bfb, 0x96df083, 0x3e3a289, 0x7e2d8be,
- 0x157a63e0, 0x99b8941, 0x1da7d345, 0xcc6cd0, 0x10beed9a, 0x48e83c0, 0x13aa2e25, 0x7cad710, 0x4029988,
- 0x13dfa9dd, 0xb94f884, 0x1f4adfef, 0xb88543, 0x16f5f8dc, 0xa6a67f4, 0x14e274e2, 0x5e56cf4, 0x2f24ef,
- 0x1e9ef967, 0xfe09bad, 0xfe079b3, 0xcc0ae9e, 0xb3edf6d, 0x3e961bc, 0x130d7831, 0x31043d6, 0xba986f9,
- 0x1d28055, 0x65240ca, 0x4971fa3, 0x81b17f8, 0x11ec34a5, 0x8366ddc, 0x1471809, 0xfa5f1c6, 0xc911e15,
- 0x8849491, 0xcf4c2e2, 0x14471b91, 0x39f75be, 0x445c21e, 0xf1585e9, 0x72cc11f, 0x4c79f0c, 0xe5522e1,
- 0x1874c1ee, 0x4444211, 0x7914884, 0x3d1b133, 0x25ba3c, 0x4194f65, 0x1c0457ef, 0xac4899d, 0xe1fa66c,
- 0x130a7918, 0x9b8d312, 0x4b1c5c8, 0x61ccac3, 0x18c8aa6f, 0xe93cb0a, 0xdccb12c, 0xde10825, 0x969737d,
- 0xf58c0c3, 0x7cee6a9, 0xc2c329a, 0xc7f9ed9, 0x107b3981, 0x696a40e, 0x152847ff, 0x4d88754, 0xb141f47,
- 0x5a16ffe, 0x3a7870a, 0x18667659, 0x3b72b03, 0xb1c9435, 0x9285394, 0xa00005a, 0x37506c, 0x2edc0bb,
- 0x19afe392, 0xeb39cac, 0x177ef286, 0xdf87197, 0x19f844ed, 0x31fe8, 0x15f9bfd, 0x80dbec, 0x342e96e,
- 0x497aced, 0xe88e909, 0x1f5fa9ba, 0x530a6ee, 0x1ef4e3f1, 0x69ffd12, 0x583006d, 0x2ecc9b1, 0x362db70,
- 0x18c7bdc5, 0xf4bb3c5, 0x1c90b957, 0xf067c09, 0x9768f2b, 0xf73566a, 0x1939a900, 0x198c38a, 0x202a2a1,
- 0x4bbf5a6, 0x4e265bc, 0x1f44b6e7, 0x185ca49, 0xa39e81b, 0x24aff5b, 0x4acc9c2, 0x638bdd3, 0xb65b2a8,
- 0x6def8be, 0xb94537a, 0x10b81dee, 0xe00ec55, 0x2f2cdf7, 0xc20622d, 0x2d20f36, 0xe03c8c9, 0x898ea76,
- 0x8e3921b, 0x8905bff, 0x1e94b6c8, 0xee7ad86, 0x154797f2, 0xa620863, 0x3fbd0d9, 0x1f3caab, 0x30c24bd,
- 0x19d3892f, 0x59c17a2, 0x1ab4b0ae, 0xf8714ee, 0x90c4098, 0xa9c800d, 0x1910236b, 0xea808d3, 0x9ae2f31,
- 0x1a15ad64, 0xa48c8d1, 0x184635a4, 0xb725ef1, 0x11921dcc, 0x3f866df, 0x16c27568, 0xbdf580a, 0xb08f55c,
- 0x186ee1c, 0xb1627fa, 0x34e82f6, 0x933837e, 0xf311be5, 0xfedb03b, 0x167f72cd, 0xa5469c0, 0x9c82531,
- 0xb92a24b, 0x14fdc8b, 0x141980d1, 0xbdc3a49, 0x7e02bb1, 0xaf4e6dd, 0x106d99e1, 0xd4616fc, 0x93c2717,
- 0x1c0a0507, 0xc6d5fed, 0x9a03d8b, 0xa1d22b0, 0x127853e3, 0xc4ac6b8, 0x1a048cf7, 0x9afb72c, 0x65d485d,
- 0x72d5998, 0xe9fa744, 0xe49e82c, 0x253cf80, 0x5f777ce, 0xa3799a5, 0x17270cbb, 0xc1d1ef0, 0xdf74977,
- 0x114cb859, 0xfa8e037, 0xb8f3fe5, 0xc734cc6, 0x70d3d61, 0xeadac62, 0x12093dd0, 0x9add67d, 0x87200d6,
- 0x175bcbb, 0xb29b49f, 0x1806b79c, 0x12fb61f, 0x170b3a10, 0x3aaf1cf, 0xa224085, 0x79d26af, 0x97759e2,
- 0x92e19f1, 0xb32714d, 0x1f00d9f1, 0xc728619, 0x9e6f627, 0xe745e24, 0x18ea4ace, 0xfc60a41, 0x125f5b2,
- 0xc3cf512, 0x39ed486, 0xf4d15fa, 0xf9167fd, 0x1c1f5dd5, 0xc21a53e, 0x1897930, 0x957a112, 0x21059a0,
- 0x1f9e3ddc, 0xa4dfced, 0x8427f6f, 0x726fbe7, 0x1ea658f8, 0x2fdcd4c, 0x17e9b66f, 0xb2e7c2e, 0x39923bf,
- 0x1bae104, 0x3973ce5, 0xc6f264c, 0x3511b84, 0x124195d7, 0x11996bd, 0x20be23d, 0xdc437c4, 0x4b4f16b,
- 0x11902a0, 0x6c29cc9, 0x1d5ffbe6, 0xdb0b4c7, 0x10144c14, 0x2f2b719, 0x301189, 0x2343336, 0xa0bf2ac,
-}
-
-func sm2P256GetScalar(b *[32]byte, a []byte) {
- var scalarBytes []byte
-
- n := new(big.Int).SetBytes(a)
- if n.Cmp(sm2P256.N) >= 0 {
- n.Mod(n, sm2P256.N)
- scalarBytes = n.Bytes()
- } else {
- scalarBytes = a
- }
- for i, v := range scalarBytes {
- b[len(scalarBytes)-(1+i)] = v
- }
-}
-
-func sm2P256PointAddMixed(xOut, yOut, zOut, x1, y1, z1, x2, y2 *sm2P256FieldElement) {
- var z1z1, z1z1z1, s2, u2, h, i, j, r, rr, v, tmp sm2P256FieldElement
-
- sm2P256Square(&z1z1, z1)
- sm2P256Add(&tmp, z1, z1)
-
- sm2P256Mul(&u2, x2, &z1z1)
- sm2P256Mul(&z1z1z1, z1, &z1z1)
- sm2P256Mul(&s2, y2, &z1z1z1)
- sm2P256Sub(&h, &u2, x1)
- sm2P256Add(&i, &h, &h)
- sm2P256Square(&i, &i)
- sm2P256Mul(&j, &h, &i)
- sm2P256Sub(&r, &s2, y1)
- sm2P256Add(&r, &r, &r)
- sm2P256Mul(&v, x1, &i)
-
- sm2P256Mul(zOut, &tmp, &h)
- sm2P256Square(&rr, &r)
- sm2P256Sub(xOut, &rr, &j)
- sm2P256Sub(xOut, xOut, &v)
- sm2P256Sub(xOut, xOut, &v)
-
- sm2P256Sub(&tmp, &v, xOut)
- sm2P256Mul(yOut, &tmp, &r)
- sm2P256Mul(&tmp, y1, &j)
- sm2P256Sub(yOut, yOut, &tmp)
- sm2P256Sub(yOut, yOut, &tmp)
-}
-
-// sm2P256CopyConditional sets out=in if mask = 0xffffffff in constant time.
-//
-// On entry: mask is either 0 or 0xffffffff.
-func sm2P256CopyConditional(out, in *sm2P256FieldElement, mask uint32) {
- for i := 0; i < 9; i++ {
- tmp := mask & (in[i] ^ out[i])
- out[i] ^= tmp
- }
-}
-
-// sm2P256SelectAffinePoint sets {out_x,out_y} to the index'th entry of table.
-// On entry: index < 16, table[0] must be zero.
-func sm2P256SelectAffinePoint(xOut, yOut *sm2P256FieldElement, table []uint32, index uint32) {
- for i := range xOut {
- xOut[i] = 0
- }
- for i := range yOut {
- yOut[i] = 0
- }
-
- for i := uint32(1); i < 16; i++ {
- mask := i ^ index
- mask |= mask >> 2
- mask |= mask >> 1
- mask &= 1
- mask--
- for j := range xOut {
- xOut[j] |= table[0] & mask
- table = table[1:]
- }
- for j := range yOut {
- yOut[j] |= table[0] & mask
- table = table[1:]
- }
- }
-}
-
-// sm2P256SelectJacobianPoint sets {out_x,out_y,out_z} to the index'th entry of
-// table.
-// On entry: index < 16, table[0] must be zero.
-func sm2P256SelectJacobianPoint(xOut, yOut, zOut *sm2P256FieldElement, table *[16][3]sm2P256FieldElement, index uint32) {
- for i := range xOut {
- xOut[i] = 0
- }
- for i := range yOut {
- yOut[i] = 0
- }
- for i := range zOut {
- zOut[i] = 0
- }
-
- // The implicit value at index 0 is all zero. We don't need to perform that
- // iteration of the loop because we already set out_* to zero.
- for i := uint32(1); i < 16; i++ {
- mask := i ^ index
- mask |= mask >> 2
- mask |= mask >> 1
- mask &= 1
- mask--
- for j := range xOut {
- xOut[j] |= table[i][0][j] & mask
- }
- for j := range yOut {
- yOut[j] |= table[i][1][j] & mask
- }
- for j := range zOut {
- zOut[j] |= table[i][2][j] & mask
- }
- }
-}
-
-// sm2P256GetBit returns the bit'th bit of scalar.
-func sm2P256GetBit(scalar *[32]uint8, bit uint) uint32 {
- return uint32(((scalar[bit>>3]) >> (bit & 7)) & 1)
-}
-
-// sm2P256ScalarBaseMult sets {xOut,yOut,zOut} = scalar*G where scalar is a
-// little-endian number. Note that the value of scalar must be less than the
-// order of the group.
-func sm2P256ScalarBaseMult(xOut, yOut, zOut *sm2P256FieldElement, scalar *[32]uint8) {
- nIsInfinityMask := ^uint32(0)
- var px, py, tx, ty, tz sm2P256FieldElement
- var pIsNoninfiniteMask, mask, tableOffset uint32
-
- for i := range xOut {
- xOut[i] = 0
- }
- for i := range yOut {
- yOut[i] = 0
- }
- for i := range zOut {
- zOut[i] = 0
- }
-
- // The loop adds bits at positions 0, 64, 128 and 192, followed by
- // positions 32,96,160 and 224 and does this 32 times.
- for i := uint(0); i < 32; i++ {
- if i != 0 {
- sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
- }
- tableOffset = 0
- for j := uint(0); j <= 32; j += 32 {
- bit0 := sm2P256GetBit(scalar, 31-i+j)
- bit1 := sm2P256GetBit(scalar, 95-i+j)
- bit2 := sm2P256GetBit(scalar, 159-i+j)
- bit3 := sm2P256GetBit(scalar, 223-i+j)
- index := bit0 | (bit1 << 1) | (bit2 << 2) | (bit3 << 3)
-
- sm2P256SelectAffinePoint(&px, &py, sm2P256Precomputed[tableOffset:], index)
- tableOffset += 30 * 9
-
- // Since scalar is less than the order of the group, we know that
- // {xOut,yOut,zOut} != {px,py,1}, unless both are zero, which we handle
- // below.
- sm2P256PointAddMixed(&tx, &ty, &tz, xOut, yOut, zOut, &px, &py)
- // The result of pointAddMixed is incorrect if {xOut,yOut,zOut} is zero
- // (a.k.a. the point at infinity). We handle that situation by
- // copying the point from the table.
- sm2P256CopyConditional(xOut, &px, nIsInfinityMask)
- sm2P256CopyConditional(yOut, &py, nIsInfinityMask)
- sm2P256CopyConditional(zOut, &sm2P256Factor[1], nIsInfinityMask)
-
- // Equally, the result is also wrong if the point from the table is
- // zero, which happens when the index is zero. We handle that by
- // only copying from {tx,ty,tz} to {xOut,yOut,zOut} if index != 0.
- pIsNoninfiniteMask = nonZeroToAllOnes(index)
- mask = pIsNoninfiniteMask & ^nIsInfinityMask
- sm2P256CopyConditional(xOut, &tx, mask)
- sm2P256CopyConditional(yOut, &ty, mask)
- sm2P256CopyConditional(zOut, &tz, mask)
- // If p was not zero, then n is now non-zero.
- nIsInfinityMask &^= pIsNoninfiniteMask
- }
- }
-}
-
-func sm2P256ScalarMult(xOut, yOut, zOut, x, y *sm2P256FieldElement, scalar *[32]uint8) {
- var precomp [16][3]sm2P256FieldElement
- var px, py, pz, tx, ty, tz sm2P256FieldElement
- var nIsInfinityMask, index, pIsNoninfiniteMask, mask uint32
-
- // We precompute 0,1,2,... times {x,y}.
- precomp[1][0] = *x
- precomp[1][1] = *y
- precomp[1][2] = sm2P256Factor[1]
-
- for i := 2; i < 16; i += 2 {
- sm2P256PointDouble(&precomp[i][0], &precomp[i][1], &precomp[i][2], &precomp[i/2][0], &precomp[i/2][1], &precomp[i/2][2])
- sm2P256PointAddMixed(&precomp[i+1][0], &precomp[i+1][1], &precomp[i+1][2], &precomp[i][0], &precomp[i][1], &precomp[i][2], x, y)
- }
-
- for i := range xOut {
- xOut[i] = 0
- }
- for i := range yOut {
- yOut[i] = 0
- }
- for i := range zOut {
- zOut[i] = 0
- }
- nIsInfinityMask = ^uint32(0)
-
- // We add in a window of four bits each iteration and do this 64 times.
- for i := 0; i < 64; i++ {
- if i != 0 {
- sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
- sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
- sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
- sm2P256PointDouble(xOut, yOut, zOut, xOut, yOut, zOut)
- }
-
- index = uint32(scalar[31-i/2])
- if (i & 1) == 1 {
- index &= 15
- } else {
- index >>= 4
- }
-
- // See the comments in scalarBaseMult about handling infinities.
- sm2P256SelectJacobianPoint(&px, &py, &pz, &precomp, index)
- sm2P256PointAdd(xOut, yOut, zOut, &px, &py, &pz, &tx, &ty, &tz)
- sm2P256CopyConditional(xOut, &px, nIsInfinityMask)
- sm2P256CopyConditional(yOut, &py, nIsInfinityMask)
- sm2P256CopyConditional(zOut, &pz, nIsInfinityMask)
-
- pIsNoninfiniteMask = nonZeroToAllOnes(index)
- mask = pIsNoninfiniteMask & ^nIsInfinityMask
- sm2P256CopyConditional(xOut, &tx, mask)
- sm2P256CopyConditional(yOut, &ty, mask)
- sm2P256CopyConditional(zOut, &tz, mask)
- nIsInfinityMask &^= pIsNoninfiniteMask
- }
-}
-
-func sm2P256PointToAffine(xOut, yOut, x, y, z *sm2P256FieldElement) {
- var zInv, zInvSq sm2P256FieldElement
-
- zz := sm2P256ToBig(z)
- zz.ModInverse(zz, sm2P256.P)
- sm2P256FromBig(&zInv, zz)
-
- sm2P256Square(&zInvSq, &zInv)
- sm2P256Mul(xOut, x, &zInvSq)
- sm2P256Mul(&zInv, &zInv, &zInvSq)
- sm2P256Mul(yOut, y, &zInv)
-}
-
-func sm2P256ToAffine(x, y, z *sm2P256FieldElement) (xOut, yOut *big.Int) {
- var xx, yy sm2P256FieldElement
-
- sm2P256PointToAffine(&xx, &yy, x, y, z)
- return sm2P256ToBig(&xx), sm2P256ToBig(&yy)
-}
-
-var sm2P256Factor = []sm2P256FieldElement{
- sm2P256FieldElement{0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0},
- sm2P256FieldElement{0x2, 0x0, 0x1FFFFF00, 0x7FF, 0x0, 0x0, 0x0, 0x2000000, 0x0},
- sm2P256FieldElement{0x4, 0x0, 0x1FFFFE00, 0xFFF, 0x0, 0x0, 0x0, 0x4000000, 0x0},
- sm2P256FieldElement{0x6, 0x0, 0x1FFFFD00, 0x17FF, 0x0, 0x0, 0x0, 0x6000000, 0x0},
- sm2P256FieldElement{0x8, 0x0, 0x1FFFFC00, 0x1FFF, 0x0, 0x0, 0x0, 0x8000000, 0x0},
- sm2P256FieldElement{0xA, 0x0, 0x1FFFFB00, 0x27FF, 0x0, 0x0, 0x0, 0xA000000, 0x0},
- sm2P256FieldElement{0xC, 0x0, 0x1FFFFA00, 0x2FFF, 0x0, 0x0, 0x0, 0xC000000, 0x0},
- sm2P256FieldElement{0xE, 0x0, 0x1FFFF900, 0x37FF, 0x0, 0x0, 0x0, 0xE000000, 0x0},
- sm2P256FieldElement{0x10, 0x0, 0x1FFFF800, 0x3FFF, 0x0, 0x0, 0x0, 0x0, 0x01},
-}
-
-func sm2P256Scalar(b *sm2P256FieldElement, a int) {
- sm2P256Mul(b, b, &sm2P256Factor[a])
-}
-
-// (x3, y3, z3) = (x1, y1, z1) + (x2, y2, z2)
-func sm2P256PointAdd(x1, y1, z1, x2, y2, z2, x3, y3, z3 *sm2P256FieldElement) {
- var u1, u2, z22, z12, z23, z13, s1, s2, h, h2, r, r2, tm sm2P256FieldElement
-
- if sm2P256ToBig(z1).Sign() == 0 {
- sm2P256Dup(x3, x2)
- sm2P256Dup(y3, y2)
- sm2P256Dup(z3, z2)
- return
- }
-
- if sm2P256ToBig(z2).Sign() == 0 {
- sm2P256Dup(x3, x1)
- sm2P256Dup(y3, y1)
- sm2P256Dup(z3, z1)
- return
- }
-
- sm2P256Square(&z12, z1) // z12 = z1 ^ 2
- sm2P256Square(&z22, z2) // z22 = z2 ^ 2
-
- sm2P256Mul(&z13, &z12, z1) // z13 = z1 ^ 3
- sm2P256Mul(&z23, &z22, z2) // z23 = z2 ^ 3
-
- sm2P256Mul(&u1, x1, &z22) // u1 = x1 * z2 ^ 2
- sm2P256Mul(&u2, x2, &z12) // u2 = x2 * z1 ^ 2
-
- sm2P256Mul(&s1, y1, &z23) // s1 = y1 * z2 ^ 3
- sm2P256Mul(&s2, y2, &z13) // s2 = y2 * z1 ^ 3
-
- if sm2P256ToBig(&u1).Cmp(sm2P256ToBig(&u2)) == 0 &&
- sm2P256ToBig(&s1).Cmp(sm2P256ToBig(&s2)) == 0 {
- sm2P256PointDouble(x1, y1, z1, x1, y1, z1)
- }
-
- sm2P256Sub(&h, &u2, &u1) // h = u2 - u1
- sm2P256Sub(&r, &s2, &s1) // r = s2 - s1
-
- sm2P256Square(&r2, &r) // r2 = r ^ 2
- sm2P256Square(&h2, &h) // h2 = h ^ 2
-
- sm2P256Mul(&tm, &h2, &h) // tm = h ^ 3
- sm2P256Sub(x3, &r2, &tm)
- sm2P256Mul(&tm, &u1, &h2)
- sm2P256Scalar(&tm, 2) // tm = 2 * (u1 * h ^ 2)
- sm2P256Sub(x3, x3, &tm) // x3 = r ^ 2 - h ^ 3 - 2 * u1 * h ^ 2
-
- sm2P256Mul(&tm, &u1, &h2) // tm = u1 * h ^ 2
- sm2P256Sub(&tm, &tm, x3) // tm = u1 * h ^ 2 - x3
- sm2P256Mul(y3, &r, &tm)
- sm2P256Mul(&tm, &h2, &h) // tm = h ^ 3
- sm2P256Mul(&tm, &tm, &s1) // tm = s1 * h ^ 3
- sm2P256Sub(y3, y3, &tm) // y3 = r * (u1 * h ^ 2 - x3) - s1 * h ^ 3
-
- sm2P256Mul(z3, z1, z2)
- sm2P256Mul(z3, z3, &h) // z3 = z1 * z3 * h
-}
-
-func sm2P256PointDouble(x3, y3, z3, x, y, z *sm2P256FieldElement) {
- var s, m, m2, x2, y2, z2, z4, y4, az4 sm2P256FieldElement
-
- sm2P256Square(&x2, x) // x2 = x ^ 2
- sm2P256Square(&y2, y) // y2 = y ^ 2
- sm2P256Square(&z2, z) // z2 = z ^ 2
-
- sm2P256Square(&z4, z) // z4 = z ^ 2
- sm2P256Mul(&z4, &z4, z) // z4 = z ^ 3
- sm2P256Mul(&z4, &z4, z) // z4 = z ^ 4
-
- sm2P256Square(&y4, y) // y4 = y ^ 2
- sm2P256Mul(&y4, &y4, y) // y4 = y ^ 3
- sm2P256Mul(&y4, &y4, y) // y4 = y ^ 4
- sm2P256Scalar(&y4, 8) // y4 = 8 * y ^ 4
-
- sm2P256Mul(&s, x, &y2)
- sm2P256Scalar(&s, 4) // s = 4 * x * y ^ 2
-
- sm2P256Dup(&m, &x2)
- sm2P256Scalar(&m, 3)
- sm2P256Mul(&az4, &sm2P256.a, &z4)
- sm2P256Add(&m, &m, &az4) // m = 3 * x ^ 2 + a * z ^ 4
-
- sm2P256Square(&m2, &m) // m2 = m ^ 2
-
- sm2P256Add(z3, y, z)
- sm2P256Square(z3, z3)
- sm2P256Sub(z3, z3, &z2)
- sm2P256Sub(z3, z3, &y2) // z' = (y + z) ^2 - z ^ 2 - y ^ 2
-
- sm2P256Sub(x3, &m2, &s)
- sm2P256Sub(x3, x3, &s) // x' = m2 - 2 * s
-
- sm2P256Sub(y3, &s, x3)
- sm2P256Mul(y3, y3, &m)
- sm2P256Sub(y3, y3, &y4) // y' = m * (s - x') - 8 * y ^ 4
-}
-
-// p256Zero31 is 0 mod p.
-var sm2P256Zero31 = sm2P256FieldElement{0x7FFFFFF8, 0x3FFFFFFC, 0x800003FC, 0x3FFFDFFC, 0x7FFFFFFC, 0x3FFFFFFC, 0x7FFFFFFC, 0x37FFFFFC, 0x7FFFFFFC}
-
-// c = a + b
-func sm2P256Add(c, a, b *sm2P256FieldElement) {
- carry := uint32(0)
- for i := 0; ; i++ {
- c[i] = a[i] + b[i]
- c[i] += carry
- carry = c[i] >> 29
- c[i] &= bottom29Bits
- i++
- if i == 9 {
- break
- }
- c[i] = a[i] + b[i]
- c[i] += carry
- carry = c[i] >> 28
- c[i] &= bottom28Bits
- }
- sm2P256ReduceCarry(c, carry)
-}
-
-// c = a - b
-func sm2P256Sub(c, a, b *sm2P256FieldElement) {
- var carry uint32
-
- for i := 0; ; i++ {
- c[i] = a[i] - b[i]
- c[i] += sm2P256Zero31[i]
- c[i] += carry
- carry = c[i] >> 29
- c[i] &= bottom29Bits
- i++
- if i == 9 {
- break
- }
- c[i] = a[i] - b[i]
- c[i] += sm2P256Zero31[i]
- c[i] += carry
- carry = c[i] >> 28
- c[i] &= bottom28Bits
- }
- sm2P256ReduceCarry(c, carry)
-}
-
-// c = a * b
-func sm2P256Mul(c, a, b *sm2P256FieldElement) {
- var tmp sm2P256LargeFieldElement
-
- tmp[0] = uint64(a[0]) * uint64(b[0])
- tmp[1] = uint64(a[0])*(uint64(b[1])<<0) +
- uint64(a[1])*(uint64(b[0])<<0)
- tmp[2] = uint64(a[0])*(uint64(b[2])<<0) +
- uint64(a[1])*(uint64(b[1])<<1) +
- uint64(a[2])*(uint64(b[0])<<0)
- tmp[3] = uint64(a[0])*(uint64(b[3])<<0) +
- uint64(a[1])*(uint64(b[2])<<0) +
- uint64(a[2])*(uint64(b[1])<<0) +
- uint64(a[3])*(uint64(b[0])<<0)
- tmp[4] = uint64(a[0])*(uint64(b[4])<<0) +
- uint64(a[1])*(uint64(b[3])<<1) +
- uint64(a[2])*(uint64(b[2])<<0) +
- uint64(a[3])*(uint64(b[1])<<1) +
- uint64(a[4])*(uint64(b[0])<<0)
- tmp[5] = uint64(a[0])*(uint64(b[5])<<0) +
- uint64(a[1])*(uint64(b[4])<<0) +
- uint64(a[2])*(uint64(b[3])<<0) +
- uint64(a[3])*(uint64(b[2])<<0) +
- uint64(a[4])*(uint64(b[1])<<0) +
- uint64(a[5])*(uint64(b[0])<<0)
- tmp[6] = uint64(a[0])*(uint64(b[6])<<0) +
- uint64(a[1])*(uint64(b[5])<<1) +
- uint64(a[2])*(uint64(b[4])<<0) +
- uint64(a[3])*(uint64(b[3])<<1) +
- uint64(a[4])*(uint64(b[2])<<0) +
- uint64(a[5])*(uint64(b[1])<<1) +
- uint64(a[6])*(uint64(b[0])<<0)
- tmp[7] = uint64(a[0])*(uint64(b[7])<<0) +
- uint64(a[1])*(uint64(b[6])<<0) +
- uint64(a[2])*(uint64(b[5])<<0) +
- uint64(a[3])*(uint64(b[4])<<0) +
- uint64(a[4])*(uint64(b[3])<<0) +
- uint64(a[5])*(uint64(b[2])<<0) +
- uint64(a[6])*(uint64(b[1])<<0) +
- uint64(a[7])*(uint64(b[0])<<0)
- // tmp[8] has the greatest value but doesn't overflow. See logic in
- // p256Square.
- tmp[8] = uint64(a[0])*(uint64(b[8])<<0) +
- uint64(a[1])*(uint64(b[7])<<1) +
- uint64(a[2])*(uint64(b[6])<<0) +
- uint64(a[3])*(uint64(b[5])<<1) +
- uint64(a[4])*(uint64(b[4])<<0) +
- uint64(a[5])*(uint64(b[3])<<1) +
- uint64(a[6])*(uint64(b[2])<<0) +
- uint64(a[7])*(uint64(b[1])<<1) +
- uint64(a[8])*(uint64(b[0])<<0)
- tmp[9] = uint64(a[1])*(uint64(b[8])<<0) +
- uint64(a[2])*(uint64(b[7])<<0) +
- uint64(a[3])*(uint64(b[6])<<0) +
- uint64(a[4])*(uint64(b[5])<<0) +
- uint64(a[5])*(uint64(b[4])<<0) +
- uint64(a[6])*(uint64(b[3])<<0) +
- uint64(a[7])*(uint64(b[2])<<0) +
- uint64(a[8])*(uint64(b[1])<<0)
- tmp[10] = uint64(a[2])*(uint64(b[8])<<0) +
- uint64(a[3])*(uint64(b[7])<<1) +
- uint64(a[4])*(uint64(b[6])<<0) +
- uint64(a[5])*(uint64(b[5])<<1) +
- uint64(a[6])*(uint64(b[4])<<0) +
- uint64(a[7])*(uint64(b[3])<<1) +
- uint64(a[8])*(uint64(b[2])<<0)
- tmp[11] = uint64(a[3])*(uint64(b[8])<<0) +
- uint64(a[4])*(uint64(b[7])<<0) +
- uint64(a[5])*(uint64(b[6])<<0) +
- uint64(a[6])*(uint64(b[5])<<0) +
- uint64(a[7])*(uint64(b[4])<<0) +
- uint64(a[8])*(uint64(b[3])<<0)
- tmp[12] = uint64(a[4])*(uint64(b[8])<<0) +
- uint64(a[5])*(uint64(b[7])<<1) +
- uint64(a[6])*(uint64(b[6])<<0) +
- uint64(a[7])*(uint64(b[5])<<1) +
- uint64(a[8])*(uint64(b[4])<<0)
- tmp[13] = uint64(a[5])*(uint64(b[8])<<0) +
- uint64(a[6])*(uint64(b[7])<<0) +
- uint64(a[7])*(uint64(b[6])<<0) +
- uint64(a[8])*(uint64(b[5])<<0)
- tmp[14] = uint64(a[6])*(uint64(b[8])<<0) +
- uint64(a[7])*(uint64(b[7])<<1) +
- uint64(a[8])*(uint64(b[6])<<0)
- tmp[15] = uint64(a[7])*(uint64(b[8])<<0) +
- uint64(a[8])*(uint64(b[7])<<0)
- tmp[16] = uint64(a[8]) * (uint64(b[8]) << 0)
- sm2P256ReduceDegree(c, &tmp)
-}
-
-// b = a * a
-func sm2P256Square(b, a *sm2P256FieldElement) {
- var tmp sm2P256LargeFieldElement
-
- tmp[0] = uint64(a[0]) * uint64(a[0])
- tmp[1] = uint64(a[0]) * (uint64(a[1]) << 1)
- tmp[2] = uint64(a[0])*(uint64(a[2])<<1) +
- uint64(a[1])*(uint64(a[1])<<1)
- tmp[3] = uint64(a[0])*(uint64(a[3])<<1) +
- uint64(a[1])*(uint64(a[2])<<1)
- tmp[4] = uint64(a[0])*(uint64(a[4])<<1) +
- uint64(a[1])*(uint64(a[3])<<2) +
- uint64(a[2])*uint64(a[2])
- tmp[5] = uint64(a[0])*(uint64(a[5])<<1) +
- uint64(a[1])*(uint64(a[4])<<1) +
- uint64(a[2])*(uint64(a[3])<<1)
- tmp[6] = uint64(a[0])*(uint64(a[6])<<1) +
- uint64(a[1])*(uint64(a[5])<<2) +
- uint64(a[2])*(uint64(a[4])<<1) +
- uint64(a[3])*(uint64(a[3])<<1)
- tmp[7] = uint64(a[0])*(uint64(a[7])<<1) +
- uint64(a[1])*(uint64(a[6])<<1) +
- uint64(a[2])*(uint64(a[5])<<1) +
- uint64(a[3])*(uint64(a[4])<<1)
- // tmp[8] has the greatest value of 2**61 + 2**60 + 2**61 + 2**60 + 2**60,
- // which is < 2**64 as required.
- tmp[8] = uint64(a[0])*(uint64(a[8])<<1) +
- uint64(a[1])*(uint64(a[7])<<2) +
- uint64(a[2])*(uint64(a[6])<<1) +
- uint64(a[3])*(uint64(a[5])<<2) +
- uint64(a[4])*uint64(a[4])
- tmp[9] = uint64(a[1])*(uint64(a[8])<<1) +
- uint64(a[2])*(uint64(a[7])<<1) +
- uint64(a[3])*(uint64(a[6])<<1) +
- uint64(a[4])*(uint64(a[5])<<1)
- tmp[10] = uint64(a[2])*(uint64(a[8])<<1) +
- uint64(a[3])*(uint64(a[7])<<2) +
- uint64(a[4])*(uint64(a[6])<<1) +
- uint64(a[5])*(uint64(a[5])<<1)
- tmp[11] = uint64(a[3])*(uint64(a[8])<<1) +
- uint64(a[4])*(uint64(a[7])<<1) +
- uint64(a[5])*(uint64(a[6])<<1)
- tmp[12] = uint64(a[4])*(uint64(a[8])<<1) +
- uint64(a[5])*(uint64(a[7])<<2) +
- uint64(a[6])*uint64(a[6])
- tmp[13] = uint64(a[5])*(uint64(a[8])<<1) +
- uint64(a[6])*(uint64(a[7])<<1)
- tmp[14] = uint64(a[6])*(uint64(a[8])<<1) +
- uint64(a[7])*(uint64(a[7])<<1)
- tmp[15] = uint64(a[7]) * (uint64(a[8]) << 1)
- tmp[16] = uint64(a[8]) * uint64(a[8])
- sm2P256ReduceDegree(b, &tmp)
-}
-
-// nonZeroToAllOnes returns:
-// 0xffffffff for 0 < x <= 2**31
-// 0 for x == 0 or x > 2**31.
-func nonZeroToAllOnes(x uint32) uint32 {
- return ((x - 1) >> 31) - 1
-}
-
-var sm2P256Carry = [8 * 9]uint32{
- 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
- 0x2, 0x0, 0x1FFFFF00, 0x7FF, 0x0, 0x0, 0x0, 0x2000000, 0x0,
- 0x4, 0x0, 0x1FFFFE00, 0xFFF, 0x0, 0x0, 0x0, 0x4000000, 0x0,
- 0x6, 0x0, 0x1FFFFD00, 0x17FF, 0x0, 0x0, 0x0, 0x6000000, 0x0,
- 0x8, 0x0, 0x1FFFFC00, 0x1FFF, 0x0, 0x0, 0x0, 0x8000000, 0x0,
- 0xA, 0x0, 0x1FFFFB00, 0x27FF, 0x0, 0x0, 0x0, 0xA000000, 0x0,
- 0xC, 0x0, 0x1FFFFA00, 0x2FFF, 0x0, 0x0, 0x0, 0xC000000, 0x0,
- 0xE, 0x0, 0x1FFFF900, 0x37FF, 0x0, 0x0, 0x0, 0xE000000, 0x0,
-}
-
-// carry < 2 ^ 3
-func sm2P256ReduceCarry(a *sm2P256FieldElement, carry uint32) {
- a[0] += sm2P256Carry[carry*9+0]
- a[2] += sm2P256Carry[carry*9+2]
- a[3] += sm2P256Carry[carry*9+3]
- a[7] += sm2P256Carry[carry*9+7]
-}
-
-// 这代码真是丑比了,我也是对自己醉了。。。
-// 你最好别改这个代码,不然你会死的很惨。。
-func sm2P256ReduceDegree(a *sm2P256FieldElement, b *sm2P256LargeFieldElement) {
- var tmp [18]uint32
- var carry, x, xMask uint32
-
- // tmp
- // 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 ...
- // 29 | 28 | 29 | 28 | 29 | 28 | 29 | 28 | 29 | 28 | 29 ...
- tmp[0] = uint32(b[0]) & bottom29Bits
- tmp[1] = uint32(b[0]) >> 29
- tmp[1] |= (uint32(b[0]>>32) << 3) & bottom28Bits
- tmp[1] += uint32(b[1]) & bottom28Bits
- carry = tmp[1] >> 28
- tmp[1] &= bottom28Bits
- for i := 2; i < 17; i++ {
- tmp[i] = (uint32(b[i-2] >> 32)) >> 25
- tmp[i] += (uint32(b[i-1])) >> 28
- tmp[i] += (uint32(b[i-1]>>32) << 4) & bottom29Bits
- tmp[i] += uint32(b[i]) & bottom29Bits
- tmp[i] += carry
- carry = tmp[i] >> 29
- tmp[i] &= bottom29Bits
-
- i++
- if i == 17 {
- break
- }
- tmp[i] = uint32(b[i-2]>>32) >> 25
- tmp[i] += uint32(b[i-1]) >> 29
- tmp[i] += ((uint32(b[i-1] >> 32)) << 3) & bottom28Bits
- tmp[i] += uint32(b[i]) & bottom28Bits
- tmp[i] += carry
- carry = tmp[i] >> 28
- tmp[i] &= bottom28Bits
- }
- tmp[17] = uint32(b[15]>>32) >> 25
- tmp[17] += uint32(b[16]) >> 29
- tmp[17] += uint32(b[16]>>32) << 3
- tmp[17] += carry
-
- for i := 0; ; i += 2 {
-
- tmp[i+1] += tmp[i] >> 29
- x = tmp[i] & bottom29Bits
- tmp[i] = 0
- if x > 0 {
- set4 := uint32(0)
- set7 := uint32(0)
- xMask = nonZeroToAllOnes(x)
- tmp[i+2] += (x << 7) & bottom29Bits
- tmp[i+3] += x >> 22
- if tmp[i+3] < 0x10000000 {
- set4 = 1
- tmp[i+3] += 0x10000000 & xMask
- tmp[i+3] -= (x << 10) & bottom28Bits
- } else {
- tmp[i+3] -= (x << 10) & bottom28Bits
- }
- if tmp[i+4] < 0x20000000 {
- tmp[i+4] += 0x20000000 & xMask
- tmp[i+4] -= set4 // 借位
- tmp[i+4] -= x >> 18
- if tmp[i+5] < 0x10000000 {
- tmp[i+5] += 0x10000000 & xMask
- tmp[i+5] -= 1 // 借位
- if tmp[i+6] < 0x20000000 {
- set7 = 1
- tmp[i+6] += 0x20000000 & xMask
- tmp[i+6] -= 1 // 借位
- } else {
- tmp[i+6] -= 1 // 借位
- }
- } else {
- tmp[i+5] -= 1
- }
- } else {
- tmp[i+4] -= set4 // 借位
- tmp[i+4] -= x >> 18
- }
- if tmp[i+7] < 0x10000000 {
- tmp[i+7] += 0x10000000 & xMask
- tmp[i+7] -= set7
- tmp[i+7] -= (x << 24) & bottom28Bits
- tmp[i+8] += (x << 28) & bottom29Bits
- if tmp[i+8] < 0x20000000 {
- tmp[i+8] += 0x20000000 & xMask
- tmp[i+8] -= 1
- tmp[i+8] -= x >> 4
- tmp[i+9] += ((x >> 1) - 1) & xMask
- } else {
- tmp[i+8] -= 1
- tmp[i+8] -= x >> 4
- tmp[i+9] += (x >> 1) & xMask
- }
- } else {
- tmp[i+7] -= set7 // 借位
- tmp[i+7] -= (x << 24) & bottom28Bits
- tmp[i+8] += (x << 28) & bottom29Bits
- if tmp[i+8] < 0x20000000 {
- tmp[i+8] += 0x20000000 & xMask
- tmp[i+8] -= x >> 4
- tmp[i+9] += ((x >> 1) - 1) & xMask
- } else {
- tmp[i+8] -= x >> 4
- tmp[i+9] += (x >> 1) & xMask
- }
- }
-
- }
-
- if i+1 == 9 {
- break
- }
-
- tmp[i+2] += tmp[i+1] >> 28
- x = tmp[i+1] & bottom28Bits
- tmp[i+1] = 0
- if x > 0 {
- set5 := uint32(0)
- set8 := uint32(0)
- set9 := uint32(0)
- xMask = nonZeroToAllOnes(x)
- tmp[i+3] += (x << 7) & bottom28Bits
- tmp[i+4] += x >> 21
- if tmp[i+4] < 0x20000000 {
- set5 = 1
- tmp[i+4] += 0x20000000 & xMask
- tmp[i+4] -= (x << 11) & bottom29Bits
- } else {
- tmp[i+4] -= (x << 11) & bottom29Bits
- }
- if tmp[i+5] < 0x10000000 {
- tmp[i+5] += 0x10000000 & xMask
- tmp[i+5] -= set5 // 借位
- tmp[i+5] -= x >> 18
- if tmp[i+6] < 0x20000000 {
- tmp[i+6] += 0x20000000 & xMask
- tmp[i+6] -= 1 // 借位
- if tmp[i+7] < 0x10000000 {
- set8 = 1
- tmp[i+7] += 0x10000000 & xMask
- tmp[i+7] -= 1 // 借位
- } else {
- tmp[i+7] -= 1 // 借位
- }
- } else {
- tmp[i+6] -= 1 // 借位
- }
- } else {
- tmp[i+5] -= set5 // 借位
- tmp[i+5] -= x >> 18
- }
- if tmp[i+8] < 0x20000000 {
- set9 = 1
- tmp[i+8] += 0x20000000 & xMask
- tmp[i+8] -= set8
- tmp[i+8] -= (x << 25) & bottom29Bits
- } else {
- tmp[i+8] -= set8
- tmp[i+8] -= (x << 25) & bottom29Bits
- }
- if tmp[i+9] < 0x10000000 {
- tmp[i+9] += 0x10000000 & xMask
- tmp[i+9] -= set9 // 借位
- tmp[i+9] -= x >> 4
- tmp[i+10] += (x - 1) & xMask
- } else {
- tmp[i+9] -= set9 // 借位
- tmp[i+9] -= x >> 4
- tmp[i+10] += x & xMask
- }
- }
- }
-
- carry = uint32(0)
- for i := 0; i < 8; i++ {
- a[i] = tmp[i+9]
- a[i] += carry
- a[i] += (tmp[i+10] << 28) & bottom29Bits
- carry = a[i] >> 29
- a[i] &= bottom29Bits
-
- i++
- a[i] = tmp[i+9] >> 1
- a[i] += carry
- carry = a[i] >> 28
- a[i] &= bottom28Bits
- }
- a[8] = tmp[17]
- a[8] += carry
- carry = a[8] >> 29
- a[8] &= bottom29Bits
- sm2P256ReduceCarry(a, carry)
-}
-
-// b = a
-func sm2P256Dup(b, a *sm2P256FieldElement) {
- *b = *a
-}
-
-// X = a * R mod P
-func sm2P256FromBig(X *sm2P256FieldElement, a *big.Int) {
- x := new(big.Int).Lsh(a, 257)
- x.Mod(x, sm2P256.P)
- for i := 0; i < 9; i++ {
- if bits := x.Bits(); len(bits) > 0 {
- X[i] = uint32(bits[0]) & bottom29Bits
- } else {
- X[i] = 0
- }
- x.Rsh(x, 29)
- i++
- if i == 9 {
- break
- }
- if bits := x.Bits(); len(bits) > 0 {
- X[i] = uint32(bits[0]) & bottom28Bits
- } else {
- X[i] = 0
- }
- x.Rsh(x, 28)
- }
-}
-
-// X = r * R mod P
-// r = X * R' mod P
-func sm2P256ToBig(X *sm2P256FieldElement) *big.Int {
- r, tm := new(big.Int), new(big.Int)
- r.SetInt64(int64(X[8]))
- for i := 7; i >= 0; i-- {
- if (i & 1) == 0 {
- r.Lsh(r, 29)
- } else {
- r.Lsh(r, 28)
- }
- tm.SetInt64(int64(X[i]))
- r.Add(r, tm)
- }
- r.Mul(r, sm2P256.RInverse)
- r.Mod(r, sm2P256.P)
- return r
-}
+++ /dev/null
-package sm2
-
-import (
- "crypto/rsa"
- "encoding/asn1"
- "errors"
- "math/big"
-)
-
-// pkcs1PrivateKey is a structure which mirrors the PKCS#1 ASN.1 for an RSA private key.
-type pkcs1PrivateKey struct {
- Version int
- N *big.Int
- E int
- D *big.Int
- P *big.Int
- Q *big.Int
- // We ignore these values, if present, because rsa will calculate them.
- Dp *big.Int `asn1:"optional"`
- Dq *big.Int `asn1:"optional"`
- Qinv *big.Int `asn1:"optional"`
-
- AdditionalPrimes []pkcs1AdditionalRSAPrime `asn1:"optional,omitempty"`
-}
-
-type pkcs1AdditionalRSAPrime struct {
- Prime *big.Int
-
- // We ignore these values because rsa will calculate them.
- Exp *big.Int
- Coeff *big.Int
-}
-
-// ParsePKCS1PrivateKey returns an RSA private key from its ASN.1 PKCS#1 DER encoded form.
-func ParsePKCS1PrivateKey(der []byte) (*rsa.PrivateKey, error) {
- var priv pkcs1PrivateKey
- rest, err := asn1.Unmarshal(der, &priv)
- if len(rest) > 0 {
- return nil, asn1.SyntaxError{Msg: "trailing data"}
- }
- if err != nil {
- return nil, err
- }
-
- if priv.Version > 1 {
- return nil, errors.New("x509: unsupported private key version")
- }
-
- if priv.N.Sign() <= 0 || priv.D.Sign() <= 0 || priv.P.Sign() <= 0 || priv.Q.Sign() <= 0 {
- return nil, errors.New("x509: private key contains zero or negative value")
- }
-
- key := new(rsa.PrivateKey)
- key.PublicKey = rsa.PublicKey{
- E: priv.E,
- N: priv.N,
- }
-
- key.D = priv.D
- key.Primes = make([]*big.Int, 2+len(priv.AdditionalPrimes))
- key.Primes[0] = priv.P
- key.Primes[1] = priv.Q
- for i, a := range priv.AdditionalPrimes {
- if a.Prime.Sign() <= 0 {
- return nil, errors.New("x509: private key contains zero or negative prime")
- }
- key.Primes[i+2] = a.Prime
- // We ignore the other two values because rsa will calculate
- // them as needed.
- }
-
- err = key.Validate()
- if err != nil {
- return nil, err
- }
- key.Precompute()
-
- return key, nil
-}
-
-// MarshalPKCS1PrivateKey converts a private key to ASN.1 DER encoded form.
-func MarshalPKCS1PrivateKey(key *rsa.PrivateKey) []byte {
- key.Precompute()
-
- version := 0
- if len(key.Primes) > 2 {
- version = 1
- }
-
- priv := pkcs1PrivateKey{
- Version: version,
- N: key.N,
- E: key.PublicKey.E,
- D: key.D,
- P: key.Primes[0],
- Q: key.Primes[1],
- Dp: key.Precomputed.Dp,
- Dq: key.Precomputed.Dq,
- Qinv: key.Precomputed.Qinv,
- }
-
- priv.AdditionalPrimes = make([]pkcs1AdditionalRSAPrime, len(key.Precomputed.CRTValues))
- for i, values := range key.Precomputed.CRTValues {
- priv.AdditionalPrimes[i].Prime = key.Primes[2+i]
- priv.AdditionalPrimes[i].Exp = values.Exp
- priv.AdditionalPrimes[i].Coeff = values.Coeff
- }
-
- b, _ := asn1.Marshal(priv)
- return b
-}
-
-// rsaPublicKey reflects the ASN.1 structure of a PKCS#1 public key.
-type rsaPublicKey struct {
- N *big.Int
- E int
-}
+++ /dev/null
-package sm2
-
-import (
- "crypto/aes"
- "crypto/cipher"
- "crypto/elliptic"
- "crypto/hmac"
- "crypto/md5"
- "crypto/rand"
- "crypto/sha1"
- "crypto/sha256"
- "crypto/sha512"
- "crypto/x509/pkix"
- "encoding/asn1"
- "encoding/pem"
- "errors"
- "hash"
- "io/ioutil"
- "math/big"
- "os"
- "reflect"
-)
-
-/*
- * reference to RFC5959 and RFC2898
- */
-
-var (
- oidPBES1 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 3} // pbeWithMD5AndDES-CBC(PBES1)
- oidPBES2 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 13} // id-PBES2(PBES2)
- oidPBKDF2 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 5, 12} // id-PBKDF2
-
- oidKEYMD5 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 5}
- oidKEYSHA1 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 7}
- oidKEYSHA256 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 9}
- oidKEYSHA512 = asn1.ObjectIdentifier{1, 2, 840, 113549, 2, 11}
-
- oidAES128CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 2}
- oidAES256CBC = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 1, 42}
-
- oidSM2 = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
-)
-
-// reference to https://www.rfc-editor.org/rfc/rfc5958.txt
-type PrivateKeyInfo struct {
- Version int // v1 or v2
- PrivateKeyAlgorithm []asn1.ObjectIdentifier
- PrivateKey []byte
-}
-
-// reference to https://www.rfc-editor.org/rfc/rfc5958.txt
-type EncryptedPrivateKeyInfo struct {
- EncryptionAlgorithm Pbes2Algorithms
- EncryptedData []byte
-}
-
-// reference to https://www.ietf.org/rfc/rfc2898.txt
-type Pbes2Algorithms struct {
- IdPBES2 asn1.ObjectIdentifier
- Pbes2Params Pbes2Params
-}
-
-// reference to https://www.ietf.org/rfc/rfc2898.txt
-type Pbes2Params struct {
- KeyDerivationFunc Pbes2KDfs // PBES2-KDFs
- EncryptionScheme Pbes2Encs // PBES2-Encs
-}
-
-// reference to https://www.ietf.org/rfc/rfc2898.txt
-type Pbes2KDfs struct {
- IdPBKDF2 asn1.ObjectIdentifier
- Pkdf2Params Pkdf2Params
-}
-
-type Pbes2Encs struct {
- EncryAlgo asn1.ObjectIdentifier
- IV []byte
-}
-
-// reference to https://www.ietf.org/rfc/rfc2898.txt
-type Pkdf2Params struct {
- Salt []byte
- IterationCount int
- Prf pkix.AlgorithmIdentifier
-}
-
-type sm2PrivateKey struct {
- Version int
- PrivateKey []byte
- NamedCurveOID asn1.ObjectIdentifier `asn1:"optional,explicit,tag:0"`
- PublicKey asn1.BitString `asn1:"optional,explicit,tag:1"`
-}
-
-type pkcs8 struct {
- Version int
- Algo pkix.AlgorithmIdentifier
- PrivateKey []byte
-}
-
-// copy from crypto/pbkdf2.go
-func pbkdf(password, salt []byte, iter, keyLen int, h func() hash.Hash) []byte {
- prf := hmac.New(h, password)
- hashLen := prf.Size()
- numBlocks := (keyLen + hashLen - 1) / hashLen
-
- var buf [4]byte
- dk := make([]byte, 0, numBlocks*hashLen)
- U := make([]byte, hashLen)
- for block := 1; block <= numBlocks; block++ {
- // N.B.: || means concatenation, ^ means XOR
- // for each block T_i = U_1 ^ U_2 ^ ... ^ U_iter
- // U_1 = PRF(password, salt || uint(i))
- prf.Reset()
- prf.Write(salt)
- buf[0] = byte(block >> 24)
- buf[1] = byte(block >> 16)
- buf[2] = byte(block >> 8)
- buf[3] = byte(block)
- prf.Write(buf[:4])
- dk = prf.Sum(dk)
- T := dk[len(dk)-hashLen:]
- copy(U, T)
-
- // U_n = PRF(password, U_(n-1))
- for n := 2; n <= iter; n++ {
- prf.Reset()
- prf.Write(U)
- U = U[:0]
- U = prf.Sum(U)
- for x := range U {
- T[x] ^= U[x]
- }
- }
- }
- return dk[:keyLen]
-}
-
-func ParseSm2PublicKey(der []byte) (*PublicKey, error) {
- var pubkey pkixPublicKey
-
- if _, err := asn1.Unmarshal(der, &pubkey); err != nil {
- return nil, err
- }
- if !reflect.DeepEqual(pubkey.Algo.Algorithm, oidSM2) {
- return nil, errors.New("x509: not sm2 elliptic curve")
- }
- curve := P256Sm2()
- x, y := elliptic.Unmarshal(curve, pubkey.BitString.Bytes)
- pub := PublicKey{
- Curve: curve,
- X: x,
- Y: y,
- }
- return &pub, nil
-}
-
-func MarshalSm2PublicKey(key *PublicKey) ([]byte, error) {
- var r pkixPublicKey
- var algo pkix.AlgorithmIdentifier
-
- algo.Algorithm = oidSM2
- algo.Parameters.Class = 0
- algo.Parameters.Tag = 6
- algo.Parameters.IsCompound = false
- algo.Parameters.FullBytes = []byte{6, 8, 42, 129, 28, 207, 85, 1, 130, 45} // asn1.Marshal(asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 301})
- r.Algo = algo
- r.BitString = asn1.BitString{Bytes: elliptic.Marshal(key.Curve, key.X, key.Y)}
- return asn1.Marshal(r)
-}
-
-func ParseSm2PrivateKey(der []byte) (*PrivateKey, error) {
- var privKey sm2PrivateKey
-
- if _, err := asn1.Unmarshal(der, &privKey); err != nil {
- return nil, errors.New("x509: failed to parse SM2 private key: " + err.Error())
- }
- curve := P256Sm2()
- k := new(big.Int).SetBytes(privKey.PrivateKey)
- curveOrder := curve.Params().N
- if k.Cmp(curveOrder) >= 0 {
- return nil, errors.New("x509: invalid elliptic curve private key value")
- }
- priv := new(PrivateKey)
- priv.Curve = curve
- priv.D = k
- privateKey := make([]byte, (curveOrder.BitLen()+7)/8)
- for len(privKey.PrivateKey) > len(privateKey) {
- if privKey.PrivateKey[0] != 0 {
- return nil, errors.New("x509: invalid private key length")
- }
- privKey.PrivateKey = privKey.PrivateKey[1:]
- }
- copy(privateKey[len(privateKey)-len(privKey.PrivateKey):], privKey.PrivateKey)
- priv.X, priv.Y = curve.ScalarBaseMult(privateKey)
- return priv, nil
-}
-
-func ParsePKCS8UnecryptedPrivateKey(der []byte) (*PrivateKey, error) {
- var privKey pkcs8
-
- if _, err := asn1.Unmarshal(der, &privKey); err != nil {
- return nil, err
- }
- if !reflect.DeepEqual(privKey.Algo.Algorithm, oidSM2) {
- return nil, errors.New("x509: not sm2 elliptic curve")
- }
- return ParseSm2PrivateKey(privKey.PrivateKey)
-}
-
-func ParsePKCS8EcryptedPrivateKey(der, pwd []byte) (*PrivateKey, error) {
- var keyInfo EncryptedPrivateKeyInfo
-
- _, err := asn1.Unmarshal(der, &keyInfo)
- if err != nil {
- return nil, errors.New("x509: unknown format")
- }
- if !reflect.DeepEqual(keyInfo.EncryptionAlgorithm.IdPBES2, oidPBES2) {
- return nil, errors.New("x509: only support PBES2")
- }
- encryptionScheme := keyInfo.EncryptionAlgorithm.Pbes2Params.EncryptionScheme
- keyDerivationFunc := keyInfo.EncryptionAlgorithm.Pbes2Params.KeyDerivationFunc
- if !reflect.DeepEqual(keyDerivationFunc.IdPBKDF2, oidPBKDF2) {
- return nil, errors.New("x509: only support PBKDF2")
- }
- pkdf2Params := keyDerivationFunc.Pkdf2Params
- if !reflect.DeepEqual(encryptionScheme.EncryAlgo, oidAES128CBC) &&
- !reflect.DeepEqual(encryptionScheme.EncryAlgo, oidAES256CBC) {
- return nil, errors.New("x509: unknow encryption algorithm")
- }
- iv := encryptionScheme.IV
- salt := pkdf2Params.Salt
- iter := pkdf2Params.IterationCount
- encryptedKey := keyInfo.EncryptedData
- var key []byte
- switch {
- case pkdf2Params.Prf.Algorithm.Equal(oidKEYMD5):
- key = pbkdf(pwd, salt, iter, 32, md5.New)
- break
- case pkdf2Params.Prf.Algorithm.Equal(oidKEYSHA1):
- key = pbkdf(pwd, salt, iter, 32, sha1.New)
- break
- case pkdf2Params.Prf.Algorithm.Equal(oidKEYSHA256):
- key = pbkdf(pwd, salt, iter, 32, sha256.New)
- break
- case pkdf2Params.Prf.Algorithm.Equal(oidKEYSHA512):
- key = pbkdf(pwd, salt, iter, 32, sha512.New)
- break
- default:
- return nil, errors.New("x509: unknown hash algorithm")
- }
- block, err := aes.NewCipher(key)
- if err != nil {
- return nil, err
- }
- mode := cipher.NewCBCDecrypter(block, iv)
- mode.CryptBlocks(encryptedKey, encryptedKey)
- rKey, err := ParsePKCS8UnecryptedPrivateKey(encryptedKey)
- if err != nil {
- return nil, errors.New("pkcs8: incorrect password")
- }
- return rKey, nil
-}
-
-func ParsePKCS8PrivateKey(der, pwd []byte) (*PrivateKey, error) {
- if pwd == nil {
- return ParsePKCS8UnecryptedPrivateKey(der)
- }
- return ParsePKCS8EcryptedPrivateKey(der, pwd)
-}
-
-func MarshalSm2UnecryptedPrivateKey(key *PrivateKey) ([]byte, error) {
- var r pkcs8
- var priv sm2PrivateKey
- var algo pkix.AlgorithmIdentifier
-
- algo.Algorithm = oidSM2
- algo.Parameters.Class = 0
- algo.Parameters.Tag = 6
- algo.Parameters.IsCompound = false
- algo.Parameters.FullBytes = []byte{6, 8, 42, 129, 28, 207, 85, 1, 130, 45} // asn1.Marshal(asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 301})
- priv.Version = 1
- priv.NamedCurveOID = oidNamedCurveP256SM2
- priv.PublicKey = asn1.BitString{Bytes: elliptic.Marshal(key.Curve, key.X, key.Y)}
- priv.PrivateKey = key.D.Bytes()
- r.Version = 0
- r.Algo = algo
- r.PrivateKey, _ = asn1.Marshal(priv)
- return asn1.Marshal(r)
-}
-
-func MarshalSm2EcryptedPrivateKey(PrivKey *PrivateKey, pwd []byte) ([]byte, error) {
- der, err := MarshalSm2UnecryptedPrivateKey(PrivKey)
- if err != nil {
- return nil, err
- }
- iter := 2048
- salt := make([]byte, 8)
- iv := make([]byte, 16)
- rand.Reader.Read(salt)
- rand.Reader.Read(iv)
- key := pbkdf(pwd, salt, iter, 32, sha1.New) // 默认是SHA1
- padding := aes.BlockSize - len(der)%aes.BlockSize
- if padding > 0 {
- n := len(der)
- der = append(der, make([]byte, padding)...)
- for i := 0; i < padding; i++ {
- der[n+i] = byte(padding)
- }
- }
- encryptedKey := make([]byte, len(der))
- block, err := aes.NewCipher(key)
- if err != nil {
- return nil, err
- }
- mode := cipher.NewCBCEncrypter(block, iv)
- mode.CryptBlocks(encryptedKey, der)
- var algorithmIdentifier pkix.AlgorithmIdentifier
- algorithmIdentifier.Algorithm = oidKEYSHA1
- algorithmIdentifier.Parameters.Tag = 5
- algorithmIdentifier.Parameters.IsCompound = false
- algorithmIdentifier.Parameters.FullBytes = []byte{5, 0}
- keyDerivationFunc := Pbes2KDfs{
- oidPBKDF2,
- Pkdf2Params{
- salt,
- iter,
- algorithmIdentifier,
- },
- }
- encryptionScheme := Pbes2Encs{
- oidAES256CBC,
- iv,
- }
- pbes2Algorithms := Pbes2Algorithms{
- oidPBES2,
- Pbes2Params{
- keyDerivationFunc,
- encryptionScheme,
- },
- }
- encryptedPkey := EncryptedPrivateKeyInfo{
- pbes2Algorithms,
- encryptedKey,
- }
- return asn1.Marshal(encryptedPkey)
-}
-
-func MarshalSm2PrivateKey(key *PrivateKey, pwd []byte) ([]byte, error) {
- if pwd == nil {
- return MarshalSm2UnecryptedPrivateKey(key)
- }
- return MarshalSm2EcryptedPrivateKey(key, pwd)
-}
-
-func ReadPrivateKeyFromMem(data []byte, pwd []byte) (*PrivateKey, error) {
- var block *pem.Block
-
- block, _ = pem.Decode(data)
- if block == nil {
- return nil, errors.New("failed to decode private key")
- }
- priv, err := ParsePKCS8PrivateKey(block.Bytes, pwd)
- return priv, err
-}
-
-func ReadPrivateKeyFromPem(FileName string, pwd []byte) (*PrivateKey, error) {
- data, err := ioutil.ReadFile(FileName)
- if err != nil {
- return nil, err
- }
- return ReadPrivateKeyFromMem(data, pwd)
-}
-
-func WritePrivateKeytoMem(key *PrivateKey, pwd []byte) ([]byte, error) {
- var block *pem.Block
-
- der, err := MarshalSm2PrivateKey(key, pwd)
- if err != nil {
- return nil, err
- }
- if pwd != nil {
- block = &pem.Block{
- Type: "ENCRYPTED PRIVATE KEY",
- Bytes: der,
- }
- } else {
- block = &pem.Block{
- Type: "PRIVATE KEY",
- Bytes: der,
- }
- }
- return pem.EncodeToMemory(block), nil
-}
-
-func WritePrivateKeytoPem(FileName string, key *PrivateKey, pwd []byte) (bool, error) {
- var block *pem.Block
-
- der, err := MarshalSm2PrivateKey(key, pwd)
- if err != nil {
- return false, err
- }
- if pwd != nil {
- block = &pem.Block{
- Type: "ENCRYPTED PRIVATE KEY",
- Bytes: der,
- }
- } else {
- block = &pem.Block{
- Type: "PRIVATE KEY",
- Bytes: der,
- }
- }
- file, err := os.Create(FileName)
- if err != nil {
- return false, err
- }
- defer file.Close()
- err = pem.Encode(file, block)
- if err != nil {
- return false, err
- }
- return true, nil
-}
-
-func ReadPublicKeyFromMem(data []byte, _ []byte) (*PublicKey, error) {
- block, _ := pem.Decode(data)
- if block == nil || block.Type != "PUBLIC KEY" {
- return nil, errors.New("failed to decode public key")
- }
- pub, err := ParseSm2PublicKey(block.Bytes)
- return pub, err
-}
-
-func ReadPublicKeyFromPem(FileName string, pwd []byte) (*PublicKey, error) {
- data, err := ioutil.ReadFile(FileName)
- if err != nil {
- return nil, err
- }
- return ReadPublicKeyFromMem(data, pwd)
-}
-
-func WritePublicKeytoMem(key *PublicKey, _ []byte) ([]byte, error) {
- der, err := MarshalSm2PublicKey(key)
- if err != nil {
- return nil, err
- }
- block := &pem.Block{
- Type: "PUBLIC KEY",
- Bytes: der,
- }
- return pem.EncodeToMemory(block), nil
-}
-
-func WritePublicKeytoPem(FileName string, key *PublicKey, _ []byte) (bool, error) {
- der, err := MarshalSm2PublicKey(key)
- if err != nil {
- return false, err
- }
- block := &pem.Block{
- Type: "PUBLIC KEY",
- Bytes: der,
- }
- file, err := os.Create(FileName)
- defer file.Close()
- if err != nil {
- return false, err
- }
- err = pem.Encode(file, block)
- if err != nil {
- return false, err
- }
- return true, nil
-}
+++ /dev/null
-package sm2
-
-// reference to ecdsa
-import (
- "bytes"
- "crypto"
- "crypto/aes"
- "crypto/cipher"
- "crypto/elliptic"
- "crypto/rand"
- "crypto/sha512"
- "encoding/asn1"
- "encoding/binary"
- "errors"
- "io"
- "math/big"
-
- "github.com/bytom/crypto/sm3"
-)
-
-const (
- aesIV = "IV for <SM2> CTR"
-)
-
-type PublicKey struct {
- elliptic.Curve
- X, Y *big.Int
-}
-
-type PrivateKey struct {
- PublicKey
- D *big.Int
-}
-
-type sm2Signature struct {
- R, S *big.Int
-}
-
-// The SM2's private key contains the public key
-func (priv *PrivateKey) Public() crypto.PublicKey {
- return &priv.PublicKey
-}
-
-func SignDigitToSignData(r, s *big.Int) ([]byte, error) {
- return asn1.Marshal(sm2Signature{r, s})
-}
-
-func SignDataToSignDigit(sign []byte) (*big.Int, *big.Int, error) {
- var sm2Sign sm2Signature
-
- _, err := asn1.Unmarshal(sign, &sm2Sign)
- if err != nil {
- return nil, nil, err
- }
- return sm2Sign.R, sm2Sign.S, nil
-}
-
-// sign format = 30 + len(z) + 02 + len(r) + r + 02 + len(s) + s, z being what follows its size, ie 02+len(r)+r+02+len(s)+s
-func (priv *PrivateKey) Sign(rand io.Reader, msg []byte, opts crypto.SignerOpts) ([]byte, error) {
- r, s, err := Sign(priv, msg)
- if err != nil {
- return nil, err
- }
- return asn1.Marshal(sm2Signature{r, s})
-}
-
-func (priv *PrivateKey) Decrypt(data []byte) ([]byte, error) {
- return Decrypt(priv, data)
-}
-
-func (pub *PublicKey) Verify(msg []byte, sign []byte) bool {
- var sm2Sign sm2Signature
-
- _, err := asn1.Unmarshal(sign, &sm2Sign)
- if err != nil {
- return false
- }
- return Verify(pub, msg, sm2Sign.R, sm2Sign.S)
-}
-
-func (pub *PublicKey) Encrypt(data []byte) ([]byte, error) {
- return Encrypt(pub, data)
-}
-
-var one = new(big.Int).SetInt64(1)
-
-func intToBytes(x int) []byte {
- var buf = make([]byte, 4)
-
- binary.BigEndian.PutUint32(buf, uint32(x))
- return buf
-}
-
-func kdf(x, y []byte, length int) ([]byte, bool) {
- var c []byte
-
- ct := 1
- h := sm3.New()
- x = append(x, y...)
- for i, j := 0, (length+31)/32; i < j; i++ {
- h.Reset()
- h.Write(x)
- h.Write(intToBytes(ct))
- hash := h.Sum(nil)
- if i+1 == j && length%32 != 0 {
- c = append(c, hash[:length%32]...)
- } else {
- c = append(c, hash...)
- }
- ct++
- }
- for i := 0; i < length; i++ {
- if c[i] != 0 {
- return c, true
- }
- }
- return c, false
-}
-
-func randFieldElement(c elliptic.Curve, rand io.Reader) (k *big.Int, err error) {
- params := c.Params()
- b := make([]byte, params.BitSize/8+8)
- _, err = io.ReadFull(rand, b)
- if err != nil {
- return
- }
- k = new(big.Int).SetBytes(b)
- n := new(big.Int).Sub(params.N, one)
- k.Mod(k, n)
- k.Add(k, one)
- return
-}
-
-func GenerateKey() (*PrivateKey, error) {
- c := P256Sm2()
- k, err := randFieldElement(c, rand.Reader)
- if err != nil {
- return nil, err
- }
- priv := new(PrivateKey)
- priv.PublicKey.Curve = c
- priv.D = k
- priv.PublicKey.X, priv.PublicKey.Y = c.ScalarBaseMult(k.Bytes())
- return priv, nil
-}
-
-var errZeroParam = errors.New("zero parameter")
-
-func Sign(priv *PrivateKey, hash []byte) (r, s *big.Int, err error) {
- entropylen := (priv.Curve.Params().BitSize + 7) / 16
- if entropylen > 32 {
- entropylen = 32
- }
- entropy := make([]byte, entropylen)
- _, err = io.ReadFull(rand.Reader, entropy)
- if err != nil {
- return
- }
-
- // Initialize an SHA-512 hash context; digest ...
- md := sha512.New()
- md.Write(priv.D.Bytes()) // the private key,
- md.Write(entropy) // the entropy,
- md.Write(hash) // and the input hash;
- key := md.Sum(nil)[:32] // and compute ChopMD-256(SHA-512),
- // which is an indifferentiable MAC.
-
- // Create an AES-CTR instance to use as a CSPRNG.
- block, err := aes.NewCipher(key)
- if err != nil {
- return nil, nil, err
- }
-
- // Create a CSPRNG that xors a stream of zeros with
- // the output of the AES-CTR instance.
- csprng := cipher.StreamReader{
- R: zeroReader,
- S: cipher.NewCTR(block, []byte(aesIV)),
- }
-
- // See [NSA] 3.4.1
- c := priv.PublicKey.Curve
- N := c.Params().N
- if N.Sign() == 0 {
- return nil, nil, errZeroParam
- }
- var k *big.Int
- e := new(big.Int).SetBytes(hash)
- for { // 调整算法细节以实现SM2
- for {
- k, err = randFieldElement(c, csprng)
- if err != nil {
- r = nil
- return
- }
- r, _ = priv.Curve.ScalarBaseMult(k.Bytes())
- r.Add(r, e)
- r.Mod(r, N)
- if r.Sign() != 0 {
- break
- }
- if t := new(big.Int).Add(r, k); t.Cmp(N) == 0 {
- break
- }
- }
- rD := new(big.Int).Mul(priv.D, r)
- s = new(big.Int).Sub(k, rD)
- d1 := new(big.Int).Add(priv.D, one)
- d1Inv := new(big.Int).ModInverse(d1, N)
- s.Mul(s, d1Inv)
- s.Mod(s, N)
- if s.Sign() != 0 {
- break
- }
- }
- return
-}
-
-func Verify(pub *PublicKey, hash []byte, r, s *big.Int) bool {
- c := pub.Curve
- N := c.Params().N
-
- if r.Sign() <= 0 || s.Sign() <= 0 {
- return false
- }
- if r.Cmp(N) >= 0 || s.Cmp(N) >= 0 {
- return false
- }
-
- // 调整算法细节以实现SM2
- t := new(big.Int).Add(r, s)
- t.Mod(t, N)
- if t.Sign() == 0 {
- return false
- }
-
- var x *big.Int
- x1, y1 := c.ScalarBaseMult(s.Bytes())
- x2, y2 := c.ScalarMult(pub.X, pub.Y, t.Bytes())
- x, _ = c.Add(x1, y1, x2, y2)
-
- e := new(big.Int).SetBytes(hash)
- x.Add(x, e)
- x.Mod(x, N)
- return x.Cmp(r) == 0
-}
-
-func Sm2Sign(priv *PrivateKey, msg, uid []byte) (r, s *big.Int, err error) {
- za, err := ZA(&priv.PublicKey, uid)
- if err != nil {
- return nil, nil, err
- }
- e, err := msgHash(za, msg)
- if err != nil {
- return nil, nil, err
- }
- c := priv.PublicKey.Curve
- N := c.Params().N
- if N.Sign() == 0 {
- return nil, nil, errZeroParam
- }
- var k *big.Int
- for { // 调整算法细节以实现SM2
- for {
- k, err = randFieldElement(c, rand.Reader)
- if err != nil {
- r = nil
- return
- }
- r, _ = priv.Curve.ScalarBaseMult(k.Bytes())
- r.Add(r, e)
- r.Mod(r, N)
- if r.Sign() != 0 {
- break
- }
- if t := new(big.Int).Add(r, k); t.Cmp(N) == 0 {
- break
- }
- }
- rD := new(big.Int).Mul(priv.D, r)
- s = new(big.Int).Sub(k, rD)
- d1 := new(big.Int).Add(priv.D, one)
- d1Inv := new(big.Int).ModInverse(d1, N)
- s.Mul(s, d1Inv)
- s.Mod(s, N)
- if s.Sign() != 0 {
- break
- }
- }
- return
-}
-
-func Sm2Verify(pub *PublicKey, msg, uid []byte, r, s *big.Int) bool {
- c := pub.Curve
- N := c.Params().N
- one := new(big.Int).SetInt64(1)
- if r.Cmp(one) < 0 || s.Cmp(one) < 0 {
- return false
- }
- if r.Cmp(N) >= 0 || s.Cmp(N) >= 0 {
- return false
- }
- za, err := ZA(pub, uid)
- if err != nil {
- return false
- }
- e, err := msgHash(za, msg)
- if err != nil {
- return false
- }
- t := new(big.Int).Add(r, s)
- t.Mod(t, N)
- if t.Sign() == 0 {
- return false
- }
- var x *big.Int
- x1, y1 := c.ScalarBaseMult(s.Bytes())
- x2, y2 := c.ScalarMult(pub.X, pub.Y, t.Bytes())
- x, _ = c.Add(x1, y1, x2, y2)
-
- x.Add(x, e)
- x.Mod(x, N)
- return x.Cmp(r) == 0
-}
-
-func msgHash(za, msg []byte) (*big.Int, error) {
- e := sm3.New()
- e.Write(za)
- e.Write(msg)
- return new(big.Int).SetBytes(e.Sum(nil)[:32]), nil
-}
-
-// ZA = H256(ENTLA || IDA || a || b || xG || yG || xA || yA)
-func ZA(pub *PublicKey, uid []byte) ([]byte, error) {
- za := sm3.New()
- uidLen := len(uid)
- if uidLen >= 8192 {
- return []byte{}, errors.New("SM2: uid too large")
- }
- Entla := uint16(8 * uidLen)
- za.Write([]byte{byte((Entla >> 8) & 0xFF)})
- za.Write([]byte{byte(Entla & 0xFF)})
- za.Write(uid)
- za.Write(sm2P256ToBig(&sm2P256.a).Bytes())
- za.Write(sm2P256.B.Bytes())
- za.Write(sm2P256.Gx.Bytes())
- za.Write(sm2P256.Gy.Bytes())
-
- xBuf := pub.X.Bytes()
- yBuf := pub.Y.Bytes()
- if n := len(xBuf); n < 32 {
- xBuf = append(zeroByteSlice[:32-n], xBuf...)
- }
- za.Write(xBuf)
- za.Write(yBuf)
- return za.Sum(nil)[:32], nil
-}
-
-// 32byte
-var zeroByteSlice = []byte{
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
-}
-
-/*
- * sm2密文结构如下:
- * x
- * y
- * hash
- * CipherText
- */
-func Encrypt(pub *PublicKey, data []byte) ([]byte, error) {
- length := len(data)
- for {
- c := []byte{}
- curve := pub.Curve
- k, err := randFieldElement(curve, rand.Reader)
- if err != nil {
- return nil, err
- }
- x1, y1 := curve.ScalarBaseMult(k.Bytes())
- x2, y2 := curve.ScalarMult(pub.X, pub.Y, k.Bytes())
- x1Buf := x1.Bytes()
- y1Buf := y1.Bytes()
- x2Buf := x2.Bytes()
- y2Buf := y2.Bytes()
- if n := len(x1Buf); n < 32 {
- x1Buf = append(zeroByteSlice[:32-n], x1Buf...)
- }
- if n := len(y1Buf); n < 32 {
- y1Buf = append(zeroByteSlice[:32-n], y1Buf...)
- }
- if n := len(x2Buf); n < 32 {
- x2Buf = append(zeroByteSlice[:32-n], x2Buf...)
- }
- if n := len(y2Buf); n < 32 {
- y2Buf = append(zeroByteSlice[:32-n], y2Buf...)
- }
- c = append(c, x1Buf...) // x分量
- c = append(c, y1Buf...) // y分量
- tm := []byte{}
- tm = append(tm, x2Buf...)
- tm = append(tm, data...)
- tm = append(tm, y2Buf...)
- h := sm3.Sm3Sum(tm)
- c = append(c, h...)
- ct, ok := kdf(x2Buf, y2Buf, length) // 密文
- if !ok {
- continue
- }
- c = append(c, ct...)
- for i := 0; i < length; i++ {
- c[96+i] ^= data[i]
- }
- return append([]byte{0x04}, c...), nil
- }
-}
-
-func Decrypt(priv *PrivateKey, data []byte) ([]byte, error) {
- data = data[1:]
- length := len(data) - 96
- curve := priv.Curve
- x := new(big.Int).SetBytes(data[:32])
- y := new(big.Int).SetBytes(data[32:64])
- x2, y2 := curve.ScalarMult(x, y, priv.D.Bytes())
- x2Buf := x2.Bytes()
- y2Buf := y2.Bytes()
- if n := len(x2Buf); n < 32 {
- x2Buf = append(zeroByteSlice[:32-n], x2Buf...)
- }
- if n := len(y2Buf); n < 32 {
- y2Buf = append(zeroByteSlice[:32-n], y2Buf...)
- }
- c, ok := kdf(x2Buf, y2Buf, length)
- if !ok {
- return nil, errors.New("Decrypt: failed to decrypt")
- }
- for i := 0; i < length; i++ {
- c[i] ^= data[i+96]
- }
- tm := []byte{}
- tm = append(tm, x2Buf...)
- tm = append(tm, c...)
- tm = append(tm, y2Buf...)
- h := sm3.Sm3Sum(tm)
- if bytes.Compare(h, data[64:96]) != 0 {
- return c, errors.New("Decrypt: failed to decrypt")
- }
- return c, nil
-}
-
-type zr struct {
- io.Reader
-}
-
-func (z *zr) Read(dst []byte) (n int, err error) {
- for i := range dst {
- dst[i] = 0
- }
- return len(dst), nil
-}
-
-var zeroReader = &zr{}
-
-func getLastBit(a *big.Int) uint {
- return a.Bit(0)
-}
-
-func Compress(a *PublicKey) []byte {
- buf := []byte{}
- yp := getLastBit(a.Y)
- buf = append(buf, a.X.Bytes()...)
- if n := len(a.X.Bytes()); n < 32 {
- buf = append(zeroByteSlice[:(32-n)], buf...)
- }
- buf = append([]byte{byte(yp)}, buf...)
- return buf
-}
-
-func Decompress(a []byte) *PublicKey {
- var aa, xx, xx3 sm2P256FieldElement
-
- P256Sm2()
- x := new(big.Int).SetBytes(a[1:])
- curve := sm2P256
- sm2P256FromBig(&xx, x)
- sm2P256Square(&xx3, &xx) // x3 = x ^ 2
- sm2P256Mul(&xx3, &xx3, &xx) // x3 = x ^ 2 * x
- sm2P256Mul(&aa, &curve.a, &xx) // a = a * x
- sm2P256Add(&xx3, &xx3, &aa)
- sm2P256Add(&xx3, &xx3, &curve.b)
-
- y2 := sm2P256ToBig(&xx3)
- y := new(big.Int).ModSqrt(y2, sm2P256.P)
- if getLastBit(y) != uint(a[0]) {
- y.Sub(sm2P256.P, y)
- }
- return &PublicKey{
- Curve: P256Sm2(),
- X: x,
- Y: y,
- }
-}
+++ /dev/null
-/*
-Copyright Suzhou Tongji Fintech Research Institute 2017 All Rights Reserved.
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
- http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package sm2
-
-import (
- "crypto/rand"
- "crypto/x509/pkix"
- "encoding/asn1"
- "fmt"
- "io/ioutil"
- "log"
- "math/big"
- "net"
- "os"
- "testing"
- "time"
-)
-
-func TestSm2(t *testing.T) {
- priv, err := GenerateKey() // 生成密钥对
- if err != nil {
- log.Fatal(err)
- }
- fmt.Printf("%v\n", priv.Curve.IsOnCurve(priv.X, priv.Y)) // 验证是否为sm2的曲线
- pub := &priv.PublicKey
- msg := []byte("123456")
- d0, err := pub.Encrypt(msg)
- if err != nil {
- fmt.Printf("Error: failed to encrypt %s: %v\n", msg, err)
- return
- }
- fmt.Printf("Cipher text = %v\n", d0)
- d1, err := priv.Decrypt(d0)
- if err != nil {
- fmt.Printf("Error: failed to decrypt: %v\n", err)
- }
- fmt.Printf("clear text = %s\n", d1)
- ok, err := WritePrivateKeytoPem("priv.pem", priv, nil) // 生成密钥文件
- if ok != true {
- log.Fatal(err)
- }
- pubKey, _ := priv.Public().(*PublicKey)
- ok, err = WritePublicKeytoPem("pub.pem", pubKey, nil) // 生成公钥文件
- if ok != true {
- log.Fatal(err)
- }
- msg = []byte("test")
- err = ioutil.WriteFile("ifile", msg, os.FileMode(0644)) // 生成测试文件
- if err != nil {
- log.Fatal(err)
- }
- privKey, err := ReadPrivateKeyFromPem("priv.pem", nil) // 读取密钥
- if err != nil {
- log.Fatal(err)
- }
- pubKey, err = ReadPublicKeyFromPem("pub.pem", nil) // 读取公钥
- if err != nil {
- log.Fatal(err)
- }
- msg, _ = ioutil.ReadFile("ifile") // 从文件读取数据
- sign, err := privKey.Sign(rand.Reader, msg, nil) // 签名
- if err != nil {
- log.Fatal(err)
- }
- err = ioutil.WriteFile("ofile", sign, os.FileMode(0644))
- if err != nil {
- log.Fatal(err)
- }
- signdata, _ := ioutil.ReadFile("ofile")
- ok = privKey.Verify(msg, signdata) // 密钥验证
- if ok != true {
- fmt.Printf("Verify error\n")
- } else {
- fmt.Printf("Verify ok\n")
- }
- ok = pubKey.Verify(msg, signdata) // 公钥验证
- if ok != true {
- fmt.Printf("Verify error\n")
- } else {
- fmt.Printf("Verify ok\n")
- }
- templateReq := CertificateRequest{
- Subject: pkix.Name{
- CommonName: "test.example.com",
- Organization: []string{"Test"},
- },
- // SignatureAlgorithm: ECDSAWithSHA256,
- SignatureAlgorithm: SM2WithSM3,
- }
- _, err = CreateCertificateRequestToPem("req.pem", &templateReq, privKey)
- if err != nil {
- log.Fatal(err)
- }
- req, err := ReadCertificateRequestFromPem("req.pem")
- if err != nil {
- log.Fatal(err)
- }
- err = req.CheckSignature()
- if err != nil {
- log.Fatal(err)
- } else {
- fmt.Printf("CheckSignature ok\n")
- }
- testExtKeyUsage := []ExtKeyUsage{ExtKeyUsageClientAuth, ExtKeyUsageServerAuth}
- testUnknownExtKeyUsage := []asn1.ObjectIdentifier{[]int{1, 2, 3}, []int{2, 59, 1}}
- extraExtensionData := []byte("extra extension")
- commonName := "test.example.com"
- template := Certificate{
- // SerialNumber is negative to ensure that negative
- // values are parsed. This is due to the prevalence of
- // buggy code that produces certificates with negative
- // serial numbers.
- SerialNumber: big.NewInt(-1),
- Subject: pkix.Name{
- CommonName: commonName,
- Organization: []string{"TEST"},
- Country: []string{"China"},
- ExtraNames: []pkix.AttributeTypeAndValue{
- {
- Type: []int{2, 5, 4, 42},
- Value: "Gopher",
- },
- // This should override the Country, above.
- {
- Type: []int{2, 5, 4, 6},
- Value: "NL",
- },
- },
- },
- NotBefore: time.Unix(1000, 0),
- NotAfter: time.Unix(100000, 0),
-
- // SignatureAlgorithm: ECDSAWithSHA256,
- SignatureAlgorithm: SM2WithSM3,
-
- SubjectKeyId: []byte{1, 2, 3, 4},
- KeyUsage: KeyUsageCertSign,
-
- ExtKeyUsage: testExtKeyUsage,
- UnknownExtKeyUsage: testUnknownExtKeyUsage,
-
- BasicConstraintsValid: true,
- IsCA: true,
-
- OCSPServer: []string{"http://ocsp.example.com"},
- IssuingCertificateURL: []string{"http://crt.example.com/ca1.crt"},
-
- DNSNames: []string{"test.example.com"},
- EmailAddresses: []string{"gopher@golang.org"},
- IPAddresses: []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:4860:0:2001::68")},
-
- PolicyIdentifiers: []asn1.ObjectIdentifier{[]int{1, 2, 3}},
- PermittedDNSDomains: []string{".example.com", "example.com"},
-
- CRLDistributionPoints: []string{"http://crl1.example.com/ca1.crl", "http://crl2.example.com/ca1.crl"},
-
- ExtraExtensions: []pkix.Extension{
- {
- Id: []int{1, 2, 3, 4},
- Value: extraExtensionData,
- },
- // This extension should override the SubjectKeyId, above.
- {
- Id: oidExtensionSubjectKeyId,
- Critical: false,
- Value: []byte{0x04, 0x04, 4, 3, 2, 1},
- },
- },
- }
- pubKey, _ = priv.Public().(*PublicKey)
- ok, _ = CreateCertificateToPem("cert.pem", &template, &template, pubKey, privKey)
- if ok != true {
- fmt.Printf("failed to create cert file\n")
- }
- cert, err := ReadCertificateFromPem("cert.pem")
- if err != nil {
- fmt.Printf("failed to read cert file")
- }
- err = cert.CheckSignature(cert.SignatureAlgorithm, cert.RawTBSCertificate, cert.Signature)
- if err != nil {
- log.Fatal(err)
- } else {
- fmt.Printf("CheckSignature ok\n")
- }
-}
-
-func BenchmarkSM2(t *testing.B) {
- t.ReportAllocs()
- for i := 0; i < t.N; i++ {
- priv, err := GenerateKey() // 生成密钥对
- if err != nil {
- log.Fatal(err)
- }
- msg := []byte("test")
- sign, err := priv.Sign(rand.Reader, msg, nil) // 签名
- if err != nil {
- log.Fatal(err)
- }
- ok := priv.Verify(msg, sign) // 密钥验证
- if ok != true {
- fmt.Printf("Verify error\n")
- } else {
- fmt.Printf("Verify ok\n")
- }
- }
-}
+++ /dev/null
-package sm2
-
-import (
- "bytes"
- "errors"
- "fmt"
- "net"
- "runtime"
- "strings"
- "time"
- "unicode/utf8"
-)
-
-type InvalidReason int
-
-const (
- // NotAuthorizedToSign results when a certificate is signed by another
- // which isn't marked as a CA certificate.
- NotAuthorizedToSign InvalidReason = iota
- // Expired results when a certificate has expired, based on the time
- // given in the VerifyOptions.
- Expired
- // CANotAuthorizedForThisName results when an intermediate or root
- // certificate has a name constraint which doesn't include the name
- // being checked.
- CANotAuthorizedForThisName
- // TooManyIntermediates results when a path length constraint is
- // violated.
- TooManyIntermediates
- // IncompatibleUsage results when the certificate's key usage indicates
- // that it may only be used for a different purpose.
- IncompatibleUsage
- // NameMismatch results when the subject name of a parent certificate
- // does not match the issuer name in the child.
- NameMismatch
-)
-
-// CertificateInvalidError results when an odd error occurs. Users of this
-// library probably want to handle all these errors uniformly.
-type CertificateInvalidError struct {
- Cert *Certificate
- Reason InvalidReason
-}
-
-func (e CertificateInvalidError) Error() string {
- switch e.Reason {
- case NotAuthorizedToSign:
- return "x509: certificate is not authorized to sign other certificates"
- case Expired:
- return "x509: certificate has expired or is not yet valid"
- case CANotAuthorizedForThisName:
- return "x509: a root or intermediate certificate is not authorized to sign in this domain"
- case TooManyIntermediates:
- return "x509: too many intermediates for path length constraint"
- case IncompatibleUsage:
- return "x509: certificate specifies an incompatible key usage"
- case NameMismatch:
- return "x509: issuer name does not match subject from issuing certificate"
- }
- return "x509: unknown error"
-}
-
-// HostnameError results when the set of authorized names doesn't match the
-// requested name.
-type HostnameError struct {
- Certificate *Certificate
- Host string
-}
-
-func (h HostnameError) Error() string {
- c := h.Certificate
-
- var valid string
- if ip := net.ParseIP(h.Host); ip != nil {
- // Trying to validate an IP
- if len(c.IPAddresses) == 0 {
- return "x509: cannot validate certificate for " + h.Host + " because it doesn't contain any IP SANs"
- }
- for _, san := range c.IPAddresses {
- if len(valid) > 0 {
- valid += ", "
- }
- valid += san.String()
- }
- } else {
- if len(c.DNSNames) > 0 {
- valid = strings.Join(c.DNSNames, ", ")
- } else {
- valid = c.Subject.CommonName
- }
- }
-
- if len(valid) == 0 {
- return "x509: certificate is not valid for any names, but wanted to match " + h.Host
- }
- return "x509: certificate is valid for " + valid + ", not " + h.Host
-}
-
-// UnknownAuthorityError results when the certificate issuer is unknown
-type UnknownAuthorityError struct {
- Cert *Certificate
- // hintErr contains an error that may be helpful in determining why an
- // authority wasn't found.
- hintErr error
- // hintCert contains a possible authority certificate that was rejected
- // because of the error in hintErr.
- hintCert *Certificate
-}
-
-func (e UnknownAuthorityError) Error() string {
- s := "x509: certificate signed by unknown authority"
- if e.hintErr != nil {
- certName := e.hintCert.Subject.CommonName
- if len(certName) == 0 {
- if len(e.hintCert.Subject.Organization) > 0 {
- certName = e.hintCert.Subject.Organization[0]
- } else {
- certName = "serial:" + e.hintCert.SerialNumber.String()
- }
- }
- s += fmt.Sprintf(" (possibly because of %q while trying to verify candidate authority certificate %q)", e.hintErr, certName)
- }
- return s
-}
-
-// SystemRootsError results when we fail to load the system root certificates.
-type SystemRootsError struct {
- Err error
-}
-
-func (se SystemRootsError) Error() string {
- msg := "x509: failed to load system roots and no roots provided"
- if se.Err != nil {
- return msg + "; " + se.Err.Error()
- }
- return msg
-}
-
-// errNotParsed is returned when a certificate without ASN.1 contents is
-// verified. Platform-specific verification needs the ASN.1 contents.
-var errNotParsed = errors.New("x509: missing ASN.1 contents; use ParseCertificate")
-
-// VerifyOptions contains parameters for Certificate.Verify. It's a structure
-// because other PKIX verification APIs have ended up needing many options.
-type VerifyOptions struct {
- DNSName string
- Intermediates *CertPool
- Roots *CertPool // if nil, the system roots are used
- CurrentTime time.Time // if zero, the current time is used
- // KeyUsage specifies which Extended Key Usage values are acceptable.
- // An empty list means ExtKeyUsageServerAuth. Key usage is considered a
- // constraint down the chain which mirrors Windows CryptoAPI behavior,
- // but not the spec. To accept any key usage, include ExtKeyUsageAny.
- KeyUsages []ExtKeyUsage
-}
-
-const (
- leafCertificate = iota
- intermediateCertificate
- rootCertificate
-)
-
-func matchNameConstraint(domain, constraint string) bool {
- // The meaning of zero length constraints is not specified, but this
- // code follows NSS and accepts them as valid for everything.
- if len(constraint) == 0 {
- return true
- }
-
- if len(domain) < len(constraint) {
- return false
- }
-
- prefixLen := len(domain) - len(constraint)
- if !strings.EqualFold(domain[prefixLen:], constraint) {
- return false
- }
-
- if prefixLen == 0 {
- return true
- }
-
- isSubdomain := domain[prefixLen-1] == '.'
- constraintHasLeadingDot := constraint[0] == '.'
- return isSubdomain != constraintHasLeadingDot
-}
-
-// isValid performs validity checks on the c.
-func (c *Certificate) isValid(certType int, currentChain []*Certificate, opts *VerifyOptions) error {
- if len(currentChain) > 0 {
- child := currentChain[len(currentChain)-1]
- if !bytes.Equal(child.RawIssuer, c.RawSubject) {
- return CertificateInvalidError{c, NameMismatch}
- }
- }
- now := opts.CurrentTime
- if now.IsZero() {
- now = time.Now()
- }
- if now.Before(c.NotBefore) || now.After(c.NotAfter) {
- return CertificateInvalidError{c, Expired}
- }
- if len(c.PermittedDNSDomains) > 0 {
- ok := false
- for _, constraint := range c.PermittedDNSDomains {
- ok = matchNameConstraint(opts.DNSName, constraint)
- if ok {
- break
- }
- }
-
- if !ok {
- return CertificateInvalidError{c, CANotAuthorizedForThisName}
- }
- }
-
- // KeyUsage status flags are ignored. From Engineering Security, Peter
- // Gutmann: A European government CA marked its signing certificates as
- // being valid for encryption only, but no-one noticed. Another
- // European CA marked its signature keys as not being valid for
- // signatures. A different CA marked its own trusted root certificate
- // as being invalid for certificate signing. Another national CA
- // distributed a certificate to be used to encrypt data for the
- // country’s tax authority that was marked as only being usable for
- // digital signatures but not for encryption. Yet another CA reversed
- // the order of the bit flags in the keyUsage due to confusion over
- // encoding endianness, essentially setting a random keyUsage in
- // certificates that it issued. Another CA created a self-invalidating
- // certificate by adding a certificate policy statement stipulating
- // that the certificate had to be used strictly as specified in the
- // keyUsage, and a keyUsage containing a flag indicating that the RSA
- // encryption key could only be used for Diffie-Hellman key agreement.
-
- if certType == intermediateCertificate && (!c.BasicConstraintsValid || !c.IsCA) {
- return CertificateInvalidError{c, NotAuthorizedToSign}
- }
-
- if c.BasicConstraintsValid && c.MaxPathLen >= 0 {
- numIntermediates := len(currentChain) - 1
- if numIntermediates > c.MaxPathLen {
- return CertificateInvalidError{c, TooManyIntermediates}
- }
- }
-
- return nil
-}
-
-// Verify attempts to verify c by building one or more chains from c to a
-// certificate in opts.Roots, using certificates in opts.Intermediates if
-// needed. If successful, it returns one or more chains where the first
-// element of the chain is c and the last element is from opts.Roots.
-//
-// If opts.Roots is nil and system roots are unavailable the returned error
-// will be of type SystemRootsError.
-//
-// WARNING: this doesn't do any revocation checking.
-func (c *Certificate) Verify(opts VerifyOptions) (chains [][]*Certificate, err error) {
- // Platform-specific verification needs the ASN.1 contents so
- // this makes the behavior consistent across platforms.
- if len(c.Raw) == 0 {
- return nil, errNotParsed
- }
- if opts.Intermediates != nil {
- for _, intermediate := range opts.Intermediates.certs {
- if len(intermediate.Raw) == 0 {
- return nil, errNotParsed
- }
- }
- }
-
- // Use Windows's own verification and chain building.
- if opts.Roots == nil && runtime.GOOS == "windows" {
- return c.systemVerify(&opts)
- }
-
- if len(c.UnhandledCriticalExtensions) > 0 {
- return nil, UnhandledCriticalExtension{}
- }
-
- if opts.Roots == nil {
- opts.Roots = systemRootsPool()
- if opts.Roots == nil {
- return nil, SystemRootsError{systemRootsErr}
- }
- }
-
- err = c.isValid(leafCertificate, nil, &opts)
- if err != nil {
- return
- }
-
- if len(opts.DNSName) > 0 {
- err = c.VerifyHostname(opts.DNSName)
- if err != nil {
- return
- }
- }
-
- var candidateChains [][]*Certificate
- if opts.Roots.contains(c) {
- candidateChains = append(candidateChains, []*Certificate{c})
- } else {
- if candidateChains, err = c.buildChains(make(map[int][][]*Certificate), []*Certificate{c}, &opts); err != nil {
- return nil, err
- }
- }
-
- keyUsages := opts.KeyUsages
- if len(keyUsages) == 0 {
- keyUsages = []ExtKeyUsage{ExtKeyUsageServerAuth}
- }
-
- // If any key usage is acceptable then we're done.
- for _, usage := range keyUsages {
- if usage == ExtKeyUsageAny {
- chains = candidateChains
- return
- }
- }
-
- for _, candidate := range candidateChains {
- if checkChainForKeyUsage(candidate, keyUsages) {
- chains = append(chains, candidate)
- }
- }
-
- if len(chains) == 0 {
- err = CertificateInvalidError{c, IncompatibleUsage}
- }
-
- return
-}
-
-func appendToFreshChain(chain []*Certificate, cert *Certificate) []*Certificate {
- n := make([]*Certificate, len(chain)+1)
- copy(n, chain)
- n[len(chain)] = cert
- return n
-}
-
-func (c *Certificate) buildChains(cache map[int][][]*Certificate, currentChain []*Certificate, opts *VerifyOptions) (chains [][]*Certificate, err error) {
- possibleRoots, failedRoot, rootErr := opts.Roots.findVerifiedParents(c)
-nextRoot:
- for _, rootNum := range possibleRoots {
- root := opts.Roots.certs[rootNum]
-
- for _, cert := range currentChain {
- if cert.Equal(root) {
- continue nextRoot
- }
- }
-
- err = root.isValid(rootCertificate, currentChain, opts)
- if err != nil {
- continue
- }
- chains = append(chains, appendToFreshChain(currentChain, root))
- }
-
- possibleIntermediates, failedIntermediate, intermediateErr := opts.Intermediates.findVerifiedParents(c)
-nextIntermediate:
- for _, intermediateNum := range possibleIntermediates {
- intermediate := opts.Intermediates.certs[intermediateNum]
- for _, cert := range currentChain {
- if cert.Equal(intermediate) {
- continue nextIntermediate
- }
- }
- err = intermediate.isValid(intermediateCertificate, currentChain, opts)
- if err != nil {
- continue
- }
- var childChains [][]*Certificate
- childChains, ok := cache[intermediateNum]
- if !ok {
- childChains, err = intermediate.buildChains(cache, appendToFreshChain(currentChain, intermediate), opts)
- cache[intermediateNum] = childChains
- }
- chains = append(chains, childChains...)
- }
-
- if len(chains) > 0 {
- err = nil
- }
-
- if len(chains) == 0 && err == nil {
- hintErr := rootErr
- hintCert := failedRoot
- if hintErr == nil {
- hintErr = intermediateErr
- hintCert = failedIntermediate
- }
- err = UnknownAuthorityError{c, hintErr, hintCert}
- }
-
- return
-}
-
-func matchHostnames(pattern, host string) bool {
- host = strings.TrimSuffix(host, ".")
- pattern = strings.TrimSuffix(pattern, ".")
-
- if len(pattern) == 0 || len(host) == 0 {
- return false
- }
-
- patternParts := strings.Split(pattern, ".")
- hostParts := strings.Split(host, ".")
-
- if len(patternParts) != len(hostParts) {
- return false
- }
-
- for i, patternPart := range patternParts {
- if i == 0 && patternPart == "*" {
- continue
- }
- if patternPart != hostParts[i] {
- return false
- }
- }
-
- return true
-}
-
-// toLowerCaseASCII returns a lower-case version of in. See RFC 6125 6.4.1. We use
-// an explicitly ASCII function to avoid any sharp corners resulting from
-// performing Unicode operations on DNS labels.
-func toLowerCaseASCII(in string) string {
- // If the string is already lower-case then there's nothing to do.
- isAlreadyLowerCase := true
- for _, c := range in {
- if c == utf8.RuneError {
- // If we get a UTF-8 error then there might be
- // upper-case ASCII bytes in the invalid sequence.
- isAlreadyLowerCase = false
- break
- }
- if 'A' <= c && c <= 'Z' {
- isAlreadyLowerCase = false
- break
- }
- }
-
- if isAlreadyLowerCase {
- return in
- }
-
- out := []byte(in)
- for i, c := range out {
- if 'A' <= c && c <= 'Z' {
- out[i] += 'a' - 'A'
- }
- }
- return string(out)
-}
-
-// VerifyHostname returns nil if c is a valid certificate for the named host.
-// Otherwise it returns an error describing the mismatch.
-func (c *Certificate) VerifyHostname(h string) error {
- // IP addresses may be written in [ ].
- candidateIP := h
- if len(h) >= 3 && h[0] == '[' && h[len(h)-1] == ']' {
- candidateIP = h[1 : len(h)-1]
- }
- if ip := net.ParseIP(candidateIP); ip != nil {
- // We only match IP addresses against IP SANs.
- // https://tools.ietf.org/html/rfc6125#appendix-B.2
- for _, candidate := range c.IPAddresses {
- if ip.Equal(candidate) {
- return nil
- }
- }
- return HostnameError{c, candidateIP}
- }
-
- lowered := toLowerCaseASCII(h)
-
- if len(c.DNSNames) > 0 {
- for _, match := range c.DNSNames {
- if matchHostnames(toLowerCaseASCII(match), lowered) {
- return nil
- }
- }
- // If Subject Alt Name is given, we ignore the common name.
- } else if matchHostnames(toLowerCaseASCII(c.Subject.CommonName), lowered) {
- return nil
- }
-
- return HostnameError{c, h}
-}
-
-func checkChainForKeyUsage(chain []*Certificate, keyUsages []ExtKeyUsage) bool {
- usages := make([]ExtKeyUsage, len(keyUsages))
- copy(usages, keyUsages)
-
- if len(chain) == 0 {
- return false
- }
-
- usagesRemaining := len(usages)
-
- // We walk down the list and cross out any usages that aren't supported
- // by each certificate. If we cross out all the usages, then the chain
- // is unacceptable.
-
-NextCert:
- for i := len(chain) - 1; i >= 0; i-- {
- cert := chain[i]
- if len(cert.ExtKeyUsage) == 0 && len(cert.UnknownExtKeyUsage) == 0 {
- // The certificate doesn't have any extended key usage specified.
- continue
- }
-
- for _, usage := range cert.ExtKeyUsage {
- if usage == ExtKeyUsageAny {
- // The certificate is explicitly good for any usage.
- continue NextCert
- }
- }
-
- const invalidUsage ExtKeyUsage = -1
-
- NextRequestedUsage:
- for i, requestedUsage := range usages {
- if requestedUsage == invalidUsage {
- continue
- }
-
- for _, usage := range cert.ExtKeyUsage {
- if requestedUsage == usage {
- continue NextRequestedUsage
- } else if requestedUsage == ExtKeyUsageServerAuth &&
- (usage == ExtKeyUsageNetscapeServerGatedCrypto ||
- usage == ExtKeyUsageMicrosoftServerGatedCrypto) {
- // In order to support COMODO
- // certificate chains, we have to
- // accept Netscape or Microsoft SGC
- // usages as equal to ServerAuth.
- continue NextRequestedUsage
- }
- }
-
- usages[i] = invalidUsage
- usagesRemaining--
- if usagesRemaining == 0 {
- return false
- }
- }
- }
-
- return true
-}
+++ /dev/null
-// crypto/x509 add sm2 support
-package sm2
-
-import (
- "bytes"
- "crypto"
- "crypto/dsa"
- "crypto/ecdsa"
- "crypto/elliptic"
- "crypto/md5"
- "crypto/rand"
- "crypto/rsa"
- "crypto/sha1"
- "crypto/sha256"
- "crypto/sha512"
- "crypto/x509/pkix"
- "encoding/asn1"
- "encoding/pem"
- "errors"
- "fmt"
- "hash"
- "io"
- "io/ioutil"
- "math/big"
- "net"
- "os"
- "strconv"
- "time"
-
- "golang.org/x/crypto/ripemd160"
- "golang.org/x/crypto/sha3"
-
- "github.com/bytom/crypto/sm3"
-)
-
-// pkixPublicKey reflects a PKIX public key structure. See SubjectPublicKeyInfo
-// in RFC 3280.
-type pkixPublicKey struct {
- Algo pkix.AlgorithmIdentifier
- BitString asn1.BitString
-}
-
-// ParsePKIXPublicKey parses a DER encoded public key. These values are
-// typically found in PEM blocks with "BEGIN PUBLIC KEY".
-//
-// Supported key types include RSA, DSA, and ECDSA. Unknown key
-// types result in an error.
-//
-// On success, pub will be of type *rsa.PublicKey, *dsa.PublicKey,
-// or *ecdsa.PublicKey.
-func ParsePKIXPublicKey(derBytes []byte) (pub interface{}, err error) {
- var pki publicKeyInfo
-
- if rest, err := asn1.Unmarshal(derBytes, &pki); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after ASN.1 of public-key")
- }
- algo := getPublicKeyAlgorithmFromOID(pki.Algorithm.Algorithm)
- if algo == UnknownPublicKeyAlgorithm {
- return nil, errors.New("x509: unknown public key algorithm")
- }
- return parsePublicKey(algo, &pki)
-}
-
-func marshalPublicKey(pub interface{}) (publicKeyBytes []byte, publicKeyAlgorithm pkix.AlgorithmIdentifier, err error) {
- switch pub := pub.(type) {
- case *rsa.PublicKey:
- publicKeyBytes, err = asn1.Marshal(rsaPublicKey{
- N: pub.N,
- E: pub.E,
- })
- if err != nil {
- return nil, pkix.AlgorithmIdentifier{}, err
- }
- publicKeyAlgorithm.Algorithm = oidPublicKeyRSA
- // This is a NULL parameters value which is required by
- // https://tools.ietf.org/html/rfc3279#section-2.3.1.
- publicKeyAlgorithm.Parameters = asn1.RawValue{
- Tag: 5,
- }
- case *ecdsa.PublicKey:
- publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y)
- oid, ok := oidFromNamedCurve(pub.Curve)
- if !ok {
- return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: unsupported elliptic curve")
- }
- publicKeyAlgorithm.Algorithm = oidPublicKeyECDSA
- var paramBytes []byte
- paramBytes, err = asn1.Marshal(oid)
- if err != nil {
- return
- }
- publicKeyAlgorithm.Parameters.FullBytes = paramBytes
- case *PublicKey:
- publicKeyBytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y)
- oid, ok := oidFromNamedCurve(pub.Curve)
- if !ok {
- return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: unsupported SM2 curve")
- }
- publicKeyAlgorithm.Algorithm = oidPublicKeyECDSA
- var paramBytes []byte
- paramBytes, err = asn1.Marshal(oid)
- if err != nil {
- return
- }
- publicKeyAlgorithm.Parameters.FullBytes = paramBytes
- default:
- return nil, pkix.AlgorithmIdentifier{}, errors.New("x509: only RSA and ECDSA(SM2) public keys supported")
- }
-
- return publicKeyBytes, publicKeyAlgorithm, nil
-}
-
-// MarshalPKIXPublicKey serialises a public key to DER-encoded PKIX format.
-func MarshalPKIXPublicKey(pub interface{}) ([]byte, error) {
- var publicKeyBytes []byte
- var publicKeyAlgorithm pkix.AlgorithmIdentifier
- var err error
-
- if publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(pub); err != nil {
- return nil, err
- }
-
- pkix := pkixPublicKey{
- Algo: publicKeyAlgorithm,
- BitString: asn1.BitString{
- Bytes: publicKeyBytes,
- BitLength: 8 * len(publicKeyBytes),
- },
- }
-
- ret, _ := asn1.Marshal(pkix)
- return ret, nil
-}
-
-// These structures reflect the ASN.1 structure of X.509 certificates.:
-
-type certificate struct {
- Raw asn1.RawContent
- TBSCertificate tbsCertificate
- SignatureAlgorithm pkix.AlgorithmIdentifier
- SignatureValue asn1.BitString
-}
-
-type tbsCertificate struct {
- Raw asn1.RawContent
- Version int `asn1:"optional,explicit,default:0,tag:0"`
- SerialNumber *big.Int
- SignatureAlgorithm pkix.AlgorithmIdentifier
- Issuer asn1.RawValue
- Validity validity
- Subject asn1.RawValue
- PublicKey publicKeyInfo
- UniqueId asn1.BitString `asn1:"optional,tag:1"`
- SubjectUniqueId asn1.BitString `asn1:"optional,tag:2"`
- Extensions []pkix.Extension `asn1:"optional,explicit,tag:3"`
-}
-
-type dsaAlgorithmParameters struct {
- P, Q, G *big.Int
-}
-
-type dsaSignature struct {
- R, S *big.Int
-}
-
-type ecdsaSignature dsaSignature
-
-type validity struct {
- NotBefore, NotAfter time.Time
-}
-
-type publicKeyInfo struct {
- Raw asn1.RawContent
- Algorithm pkix.AlgorithmIdentifier
- PublicKey asn1.BitString
-}
-
-// RFC 5280, 4.2.1.1
-type authKeyId struct {
- Id []byte `asn1:"optional,tag:0"`
-}
-
-type SignatureAlgorithm int
-
-type Hash uint
-
-func init() {
- RegisterHash(MD4, nil)
- RegisterHash(MD5, md5.New)
- RegisterHash(SHA1, sha1.New)
- RegisterHash(SHA224, sha256.New224)
- RegisterHash(SHA256, sha256.New)
- RegisterHash(SHA384, sha512.New384)
- RegisterHash(SHA512, sha512.New)
- RegisterHash(MD5SHA1, nil)
- RegisterHash(RIPEMD160, ripemd160.New)
- RegisterHash(SHA3_224, sha3.New224)
- RegisterHash(SHA3_256, sha3.New256)
- RegisterHash(SHA3_384, sha3.New384)
- RegisterHash(SHA3_512, sha3.New512)
- RegisterHash(SHA512_224, sha512.New512_224)
- RegisterHash(SHA512_256, sha512.New512_256)
- RegisterHash(SM3, sm3.New)
-}
-
-// HashFunc simply returns the value of h so that Hash implements SignerOpts.
-func (h Hash) HashFunc() crypto.Hash {
- return crypto.Hash(h)
-}
-
-const (
- MD4 Hash = 1 + iota // import golang.org/x/crypto/md4
- MD5 // import crypto/md5
- SHA1 // import crypto/sha1
- SHA224 // import crypto/sha256
- SHA256 // import crypto/sha256
- SHA384 // import crypto/sha512
- SHA512 // import crypto/sha512
- MD5SHA1 // no implementation; MD5+SHA1 used for TLS RSA
- RIPEMD160 // import golang.org/x/crypto/ripemd160
- SHA3_224 // import golang.org/x/crypto/sha3
- SHA3_256 // import golang.org/x/crypto/sha3
- SHA3_384 // import golang.org/x/crypto/sha3
- SHA3_512 // import golang.org/x/crypto/sha3
- SHA512_224 // import crypto/sha512
- SHA512_256 // import crypto/sha512
- SM3
- maxHash
-)
-
-var digestSizes = []uint8{
- MD4: 16,
- MD5: 16,
- SHA1: 20,
- SHA224: 28,
- SHA256: 32,
- SHA384: 48,
- SHA512: 64,
- SHA512_224: 28,
- SHA512_256: 32,
- SHA3_224: 28,
- SHA3_256: 32,
- SHA3_384: 48,
- SHA3_512: 64,
- MD5SHA1: 36,
- RIPEMD160: 20,
- SM3: 32,
-}
-
-// Size returns the length, in bytes, of a digest resulting from the given hash
-// function. It doesn't require that the hash function in question be linked
-// into the program.
-func (h Hash) Size() int {
- if h > 0 && h < maxHash {
- return int(digestSizes[h])
- }
- panic("crypto: Size of unknown hash function")
-}
-
-var hashes = make([]func() hash.Hash, maxHash)
-
-// New returns a new hash.Hash calculating the given hash function. New panics
-// if the hash function is not linked into the binary.
-func (h Hash) New() hash.Hash {
- if h > 0 && h < maxHash {
- f := hashes[h]
- if f != nil {
- return f()
- }
- }
- panic("crypto: requested hash function #" + strconv.Itoa(int(h)) + " is unavailable")
-}
-
-// Available reports whether the given hash function is linked into the binary.
-func (h Hash) Available() bool {
- return h < maxHash && hashes[h] != nil
-}
-
-// RegisterHash registers a function that returns a new instance of the given
-// hash function. This is intended to be called from the init function in
-// packages that implement hash functions.
-func RegisterHash(h Hash, f func() hash.Hash) {
- if h >= maxHash {
- panic("crypto: RegisterHash of unknown hash function")
- }
- hashes[h] = f
-}
-
-const (
- UnknownSignatureAlgorithm SignatureAlgorithm = iota
- MD2WithRSA
- MD5WithRSA
- // SM3WithRSA reserve
- SHA1WithRSA
- SHA256WithRSA
- SHA384WithRSA
- SHA512WithRSA
- DSAWithSHA1
- DSAWithSHA256
- ECDSAWithSHA1
- ECDSAWithSHA256
- ECDSAWithSHA384
- ECDSAWithSHA512
- SHA256WithRSAPSS
- SHA384WithRSAPSS
- SHA512WithRSAPSS
- SM2WithSM3
- SM2WithSHA1
- SM2WithSHA256
-)
-
-func (algo SignatureAlgorithm) isRSAPSS() bool {
- switch algo {
- case SHA256WithRSAPSS, SHA384WithRSAPSS, SHA512WithRSAPSS:
- return true
- default:
- return false
- }
-}
-
-var algoName = [...]string{
- MD2WithRSA: "MD2-RSA",
- MD5WithRSA: "MD5-RSA",
- SHA1WithRSA: "SHA1-RSA",
- // SM3WithRSA: "SM3-RSA", reserve
- SHA256WithRSA: "SHA256-RSA",
- SHA384WithRSA: "SHA384-RSA",
- SHA512WithRSA: "SHA512-RSA",
- SHA256WithRSAPSS: "SHA256-RSAPSS",
- SHA384WithRSAPSS: "SHA384-RSAPSS",
- SHA512WithRSAPSS: "SHA512-RSAPSS",
- DSAWithSHA1: "DSA-SHA1",
- DSAWithSHA256: "DSA-SHA256",
- ECDSAWithSHA1: "ECDSA-SHA1",
- ECDSAWithSHA256: "ECDSA-SHA256",
- ECDSAWithSHA384: "ECDSA-SHA384",
- ECDSAWithSHA512: "ECDSA-SHA512",
- SM2WithSM3: "SM2-SM3",
- SM2WithSHA1: "SM2-SHA1",
- SM2WithSHA256: "SM2-SHA256",
-}
-
-func (algo SignatureAlgorithm) String() string {
- if 0 < algo && int(algo) < len(algoName) {
- return algoName[algo]
- }
- return strconv.Itoa(int(algo))
-}
-
-type PublicKeyAlgorithm int
-
-const (
- UnknownPublicKeyAlgorithm PublicKeyAlgorithm = iota
- RSA
- DSA
- ECDSA
-)
-
-// OIDs for signature algorithms
-//
-// pkcs-1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) rsadsi(113549) pkcs(1) 1 }
-//
-//
-// RFC 3279 2.2.1 RSA Signature Algorithms
-//
-// md2WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 2 }
-//
-// md5WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 4 }
-//
-// sha-1WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 5 }
-//
-// dsaWithSha1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) x9-57(10040) x9cm(4) 3 }
-//
-// RFC 3279 2.2.3 ECDSA Signature Algorithm
-//
-// ecdsa-with-SHA1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) ansi-x962(10045)
-// signatures(4) ecdsa-with-SHA1(1)}
-//
-//
-// RFC 4055 5 PKCS #1 Version 1.5
-//
-// sha256WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 11 }
-//
-// sha384WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 12 }
-//
-// sha512WithRSAEncryption OBJECT IDENTIFIER ::= { pkcs-1 13 }
-//
-//
-// RFC 5758 3.1 DSA Signature Algorithms
-//
-// dsaWithSha256 OBJECT IDENTIFIER ::= {
-// joint-iso-ccitt(2) country(16) us(840) organization(1) gov(101)
-// csor(3) algorithms(4) id-dsa-with-sha2(3) 2}
-//
-// RFC 5758 3.2 ECDSA Signature Algorithm
-//
-// ecdsa-with-SHA256 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
-// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 2 }
-//
-// ecdsa-with-SHA384 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
-// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 3 }
-//
-// ecdsa-with-SHA512 OBJECT IDENTIFIER ::= { iso(1) member-body(2)
-// us(840) ansi-X9-62(10045) signatures(4) ecdsa-with-SHA2(3) 4 }
-
-var (
- oidSignatureMD2WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 2}
- oidSignatureMD5WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 4}
- oidSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 5}
- oidSignatureSHA256WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 11}
- oidSignatureSHA384WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 12}
- oidSignatureSHA512WithRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 13}
- oidSignatureRSAPSS = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 10}
- oidSignatureDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 3}
- oidSignatureDSAWithSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 3, 2}
- oidSignatureECDSAWithSHA1 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 1}
- oidSignatureECDSAWithSHA256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 2}
- oidSignatureECDSAWithSHA384 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 3}
- oidSignatureECDSAWithSHA512 = asn1.ObjectIdentifier{1, 2, 840, 10045, 4, 3, 4}
- oidSignatureSM2WithSM3 = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 501}
- oidSignatureSM2WithSHA1 = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 502}
- oidSignatureSM2WithSHA256 = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 503}
- // oidSignatureSM3WithRSA = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 504}
-
- oidSM3 = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 401, 1}
- oidSHA256 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 1}
- oidSHA384 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 2}
- oidSHA512 = asn1.ObjectIdentifier{2, 16, 840, 1, 101, 3, 4, 2, 3}
-
- oidMGF1 = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 8}
-
- // oidISOSignatureSHA1WithRSA means the same as oidSignatureSHA1WithRSA
- // but it's specified by ISO. Microsoft's makecert.exe has been known
- // to produce certificates with this OID.
- oidISOSignatureSHA1WithRSA = asn1.ObjectIdentifier{1, 3, 14, 3, 2, 29}
-)
-
-var signatureAlgorithmDetails = []struct {
- algo SignatureAlgorithm
- oid asn1.ObjectIdentifier
- pubKeyAlgo PublicKeyAlgorithm
- hash Hash
-}{
- {MD2WithRSA, oidSignatureMD2WithRSA, RSA, Hash(0) /* no value for MD2 */},
- {MD5WithRSA, oidSignatureMD5WithRSA, RSA, MD5},
- {SHA1WithRSA, oidSignatureSHA1WithRSA, RSA, SHA1},
- {SHA1WithRSA, oidISOSignatureSHA1WithRSA, RSA, SHA1},
- {SHA256WithRSA, oidSignatureSHA256WithRSA, RSA, SHA256},
- {SHA384WithRSA, oidSignatureSHA384WithRSA, RSA, SHA384},
- {SHA512WithRSA, oidSignatureSHA512WithRSA, RSA, SHA512},
- {SHA256WithRSAPSS, oidSignatureRSAPSS, RSA, SHA256},
- {SHA384WithRSAPSS, oidSignatureRSAPSS, RSA, SHA384},
- {SHA512WithRSAPSS, oidSignatureRSAPSS, RSA, SHA512},
- {DSAWithSHA1, oidSignatureDSAWithSHA1, DSA, SHA1},
- {DSAWithSHA256, oidSignatureDSAWithSHA256, DSA, SHA256},
- {ECDSAWithSHA1, oidSignatureECDSAWithSHA1, ECDSA, SHA1},
- {ECDSAWithSHA256, oidSignatureECDSAWithSHA256, ECDSA, SHA256},
- {ECDSAWithSHA384, oidSignatureECDSAWithSHA384, ECDSA, SHA384},
- {ECDSAWithSHA512, oidSignatureECDSAWithSHA512, ECDSA, SHA512},
- {SM2WithSM3, oidSignatureSM2WithSM3, ECDSA, SM3},
- {SM2WithSHA1, oidSignatureSM2WithSHA1, ECDSA, SHA1},
- {SM2WithSHA256, oidSignatureSM2WithSHA256, ECDSA, SHA256},
- // {SM3WithRSA, oidSignatureSM3WithRSA, RSA, SM3},
-}
-
-// pssParameters reflects the parameters in an AlgorithmIdentifier that
-// specifies RSA PSS. See https://tools.ietf.org/html/rfc3447#appendix-A.2.3
-type pssParameters struct {
- // The following three fields are not marked as
- // optional because the default values specify SHA-1,
- // which is no longer suitable for use in signatures.
- Hash pkix.AlgorithmIdentifier `asn1:"explicit,tag:0"`
- MGF pkix.AlgorithmIdentifier `asn1:"explicit,tag:1"`
- SaltLength int `asn1:"explicit,tag:2"`
- TrailerField int `asn1:"optional,explicit,tag:3,default:1"`
-}
-
-// rsaPSSParameters returns an asn1.RawValue suitable for use as the Parameters
-// in an AlgorithmIdentifier that specifies RSA PSS.
-func rsaPSSParameters(hashFunc Hash) asn1.RawValue {
- var hashOID asn1.ObjectIdentifier
-
- switch hashFunc {
- case SHA256:
- hashOID = oidSHA256
- case SHA384:
- hashOID = oidSHA384
- case SHA512:
- hashOID = oidSHA512
- }
-
- params := pssParameters{
- Hash: pkix.AlgorithmIdentifier{
- Algorithm: hashOID,
- Parameters: asn1.RawValue{
- Tag: 5, /* ASN.1 NULL */
- },
- },
- MGF: pkix.AlgorithmIdentifier{
- Algorithm: oidMGF1,
- },
- SaltLength: hashFunc.Size(),
- TrailerField: 1,
- }
-
- mgf1Params := pkix.AlgorithmIdentifier{
- Algorithm: hashOID,
- Parameters: asn1.RawValue{
- Tag: 5, /* ASN.1 NULL */
- },
- }
-
- var err error
- params.MGF.Parameters.FullBytes, err = asn1.Marshal(mgf1Params)
- if err != nil {
- panic(err)
- }
-
- serialized, err := asn1.Marshal(params)
- if err != nil {
- panic(err)
- }
-
- return asn1.RawValue{FullBytes: serialized}
-}
-
-func getSignatureAlgorithmFromAI(ai pkix.AlgorithmIdentifier) SignatureAlgorithm {
- if !ai.Algorithm.Equal(oidSignatureRSAPSS) {
- for _, details := range signatureAlgorithmDetails {
- if ai.Algorithm.Equal(details.oid) {
- return details.algo
- }
- }
- return UnknownSignatureAlgorithm
- }
-
- // RSA PSS is special because it encodes important parameters
- // in the Parameters.
-
- var params pssParameters
- if _, err := asn1.Unmarshal(ai.Parameters.FullBytes, ¶ms); err != nil {
- return UnknownSignatureAlgorithm
- }
-
- var mgf1HashFunc pkix.AlgorithmIdentifier
- if _, err := asn1.Unmarshal(params.MGF.Parameters.FullBytes, &mgf1HashFunc); err != nil {
- return UnknownSignatureAlgorithm
- }
-
- // PSS is greatly overburdened with options. This code forces
- // them into three buckets by requiring that the MGF1 hash
- // function always match the message hash function (as
- // recommended in
- // https://tools.ietf.org/html/rfc3447#section-8.1), that the
- // salt length matches the hash length, and that the trailer
- // field has the default value.
- asn1NULL := []byte{0x05, 0x00}
- if !bytes.Equal(params.Hash.Parameters.FullBytes, asn1NULL) ||
- !params.MGF.Algorithm.Equal(oidMGF1) ||
- !mgf1HashFunc.Algorithm.Equal(params.Hash.Algorithm) ||
- !bytes.Equal(mgf1HashFunc.Parameters.FullBytes, asn1NULL) ||
- params.TrailerField != 1 {
- return UnknownSignatureAlgorithm
- }
-
- switch {
- case params.Hash.Algorithm.Equal(oidSHA256) && params.SaltLength == 32:
- return SHA256WithRSAPSS
- case params.Hash.Algorithm.Equal(oidSHA384) && params.SaltLength == 48:
- return SHA384WithRSAPSS
- case params.Hash.Algorithm.Equal(oidSHA512) && params.SaltLength == 64:
- return SHA512WithRSAPSS
- }
-
- return UnknownSignatureAlgorithm
-}
-
-// RFC 3279, 2.3 Public Key Algorithms
-//
-// pkcs-1 OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
-// rsadsi(113549) pkcs(1) 1 }
-//
-// rsaEncryption OBJECT IDENTIFIER ::== { pkcs1-1 1 }
-//
-// id-dsa OBJECT IDENTIFIER ::== { iso(1) member-body(2) us(840)
-// x9-57(10040) x9cm(4) 1 }
-//
-// RFC 5480, 2.1.1 Unrestricted Algorithm Identifier and Parameters
-//
-// id-ecPublicKey OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) ansi-X9-62(10045) keyType(2) 1 }
-var (
- oidPublicKeyRSA = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 1, 1}
- oidPublicKeyDSA = asn1.ObjectIdentifier{1, 2, 840, 10040, 4, 1}
- oidPublicKeyECDSA = asn1.ObjectIdentifier{1, 2, 840, 10045, 2, 1}
-)
-
-func getPublicKeyAlgorithmFromOID(oid asn1.ObjectIdentifier) PublicKeyAlgorithm {
- switch {
- case oid.Equal(oidPublicKeyRSA):
- return RSA
- case oid.Equal(oidPublicKeyDSA):
- return DSA
- case oid.Equal(oidPublicKeyECDSA):
- return ECDSA
- }
- return UnknownPublicKeyAlgorithm
-}
-
-// RFC 5480, 2.1.1.1. Named Curve
-//
-// secp224r1 OBJECT IDENTIFIER ::= {
-// iso(1) identified-organization(3) certicom(132) curve(0) 33 }
-//
-// secp256r1 OBJECT IDENTIFIER ::= {
-// iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3)
-// prime(1) 7 }
-//
-// secp384r1 OBJECT IDENTIFIER ::= {
-// iso(1) identified-organization(3) certicom(132) curve(0) 34 }
-//
-// secp521r1 OBJECT IDENTIFIER ::= {
-// iso(1) identified-organization(3) certicom(132) curve(0) 35 }
-//
-// NB: secp256r1 is equivalent to prime256v1
-var (
- oidNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33}
- oidNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7}
- oidNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34}
- oidNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35}
- oidNamedCurveP256SM2 = asn1.ObjectIdentifier{1, 2, 156, 10197, 1, 301} // I get the SM2 ID through parsing the pem file generated by gmssl
-)
-
-func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve {
- switch {
- case oid.Equal(oidNamedCurveP224):
- return elliptic.P224()
- case oid.Equal(oidNamedCurveP256):
- return elliptic.P256()
- case oid.Equal(oidNamedCurveP384):
- return elliptic.P384()
- case oid.Equal(oidNamedCurveP521):
- return elliptic.P521()
- case oid.Equal(oidNamedCurveP256SM2):
- return P256Sm2()
- }
- return nil
-}
-
-func oidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) {
- switch curve {
- case elliptic.P224():
- return oidNamedCurveP224, true
- case elliptic.P256():
- return oidNamedCurveP256, true
- case elliptic.P384():
- return oidNamedCurveP384, true
- case elliptic.P521():
- return oidNamedCurveP521, true
- case P256Sm2():
- return oidNamedCurveP256SM2, true
- }
- return nil, false
-}
-
-// KeyUsage represents the set of actions that are valid for a given key. It's
-// a bitmap of the KeyUsage* constants.
-type KeyUsage int
-
-const (
- KeyUsageDigitalSignature KeyUsage = 1 << iota
- KeyUsageContentCommitment
- KeyUsageKeyEncipherment
- KeyUsageDataEncipherment
- KeyUsageKeyAgreement
- KeyUsageCertSign
- KeyUsageCRLSign
- KeyUsageEncipherOnly
- KeyUsageDecipherOnly
-)
-
-// RFC 5280, 4.2.1.12 Extended Key Usage
-//
-// anyExtendedKeyUsage OBJECT IDENTIFIER ::= { id-ce-extKeyUsage 0 }
-//
-// id-kp OBJECT IDENTIFIER ::= { id-pkix 3 }
-//
-// id-kp-serverAuth OBJECT IDENTIFIER ::= { id-kp 1 }
-// id-kp-clientAuth OBJECT IDENTIFIER ::= { id-kp 2 }
-// id-kp-codeSigning OBJECT IDENTIFIER ::= { id-kp 3 }
-// id-kp-emailProtection OBJECT IDENTIFIER ::= { id-kp 4 }
-// id-kp-timeStamping OBJECT IDENTIFIER ::= { id-kp 8 }
-// id-kp-OCSPSigning OBJECT IDENTIFIER ::= { id-kp 9 }
-var (
- oidExtKeyUsageAny = asn1.ObjectIdentifier{2, 5, 29, 37, 0}
- oidExtKeyUsageServerAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 1}
- oidExtKeyUsageClientAuth = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 2}
- oidExtKeyUsageCodeSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 3}
- oidExtKeyUsageEmailProtection = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 4}
- oidExtKeyUsageIPSECEndSystem = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 5}
- oidExtKeyUsageIPSECTunnel = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 6}
- oidExtKeyUsageIPSECUser = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 7}
- oidExtKeyUsageTimeStamping = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 8}
- oidExtKeyUsageOCSPSigning = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 3, 9}
- oidExtKeyUsageMicrosoftServerGatedCrypto = asn1.ObjectIdentifier{1, 3, 6, 1, 4, 1, 311, 10, 3, 3}
- oidExtKeyUsageNetscapeServerGatedCrypto = asn1.ObjectIdentifier{2, 16, 840, 1, 113730, 4, 1}
-)
-
-// ExtKeyUsage represents an extended set of actions that are valid for a given key.
-// Each of the ExtKeyUsage* constants define a unique action.
-type ExtKeyUsage int
-
-const (
- ExtKeyUsageAny ExtKeyUsage = iota
- ExtKeyUsageServerAuth
- ExtKeyUsageClientAuth
- ExtKeyUsageCodeSigning
- ExtKeyUsageEmailProtection
- ExtKeyUsageIPSECEndSystem
- ExtKeyUsageIPSECTunnel
- ExtKeyUsageIPSECUser
- ExtKeyUsageTimeStamping
- ExtKeyUsageOCSPSigning
- ExtKeyUsageMicrosoftServerGatedCrypto
- ExtKeyUsageNetscapeServerGatedCrypto
-)
-
-// extKeyUsageOIDs contains the mapping between an ExtKeyUsage and its OID.
-var extKeyUsageOIDs = []struct {
- extKeyUsage ExtKeyUsage
- oid asn1.ObjectIdentifier
-}{
- {ExtKeyUsageAny, oidExtKeyUsageAny},
- {ExtKeyUsageServerAuth, oidExtKeyUsageServerAuth},
- {ExtKeyUsageClientAuth, oidExtKeyUsageClientAuth},
- {ExtKeyUsageCodeSigning, oidExtKeyUsageCodeSigning},
- {ExtKeyUsageEmailProtection, oidExtKeyUsageEmailProtection},
- {ExtKeyUsageIPSECEndSystem, oidExtKeyUsageIPSECEndSystem},
- {ExtKeyUsageIPSECTunnel, oidExtKeyUsageIPSECTunnel},
- {ExtKeyUsageIPSECUser, oidExtKeyUsageIPSECUser},
- {ExtKeyUsageTimeStamping, oidExtKeyUsageTimeStamping},
- {ExtKeyUsageOCSPSigning, oidExtKeyUsageOCSPSigning},
- {ExtKeyUsageMicrosoftServerGatedCrypto, oidExtKeyUsageMicrosoftServerGatedCrypto},
- {ExtKeyUsageNetscapeServerGatedCrypto, oidExtKeyUsageNetscapeServerGatedCrypto},
-}
-
-func extKeyUsageFromOID(oid asn1.ObjectIdentifier) (eku ExtKeyUsage, ok bool) {
- for _, pair := range extKeyUsageOIDs {
- if oid.Equal(pair.oid) {
- return pair.extKeyUsage, true
- }
- }
- return
-}
-
-func oidFromExtKeyUsage(eku ExtKeyUsage) (oid asn1.ObjectIdentifier, ok bool) {
- for _, pair := range extKeyUsageOIDs {
- if eku == pair.extKeyUsage {
- return pair.oid, true
- }
- }
- return
-}
-
-// A Certificate represents an X.509 certificate.
-type Certificate struct {
- Raw []byte // Complete ASN.1 DER content (certificate, signature algorithm and signature).
- RawTBSCertificate []byte // Certificate part of raw ASN.1 DER content.
- RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo.
- RawSubject []byte // DER encoded Subject
- RawIssuer []byte // DER encoded Issuer
-
- Signature []byte
- SignatureAlgorithm SignatureAlgorithm
-
- PublicKeyAlgorithm PublicKeyAlgorithm
- PublicKey interface{}
-
- Version int
- SerialNumber *big.Int
- Issuer pkix.Name
- Subject pkix.Name
- NotBefore, NotAfter time.Time // Validity bounds.
- KeyUsage KeyUsage
-
- // Extensions contains raw X.509 extensions. When parsing certificates,
- // this can be used to extract non-critical extensions that are not
- // parsed by this package. When marshaling certificates, the Extensions
- // field is ignored, see ExtraExtensions.
- Extensions []pkix.Extension
-
- // ExtraExtensions contains extensions to be copied, raw, into any
- // marshaled certificates. Values override any extensions that would
- // otherwise be produced based on the other fields. The ExtraExtensions
- // field is not populated when parsing certificates, see Extensions.
- ExtraExtensions []pkix.Extension
-
- // UnhandledCriticalExtensions contains a list of extension IDs that
- // were not (fully) processed when parsing. Verify will fail if this
- // slice is non-empty, unless verification is delegated to an OS
- // library which understands all the critical extensions.
- //
- // Users can access these extensions using Extensions and can remove
- // elements from this slice if they believe that they have been
- // handled.
- UnhandledCriticalExtensions []asn1.ObjectIdentifier
-
- ExtKeyUsage []ExtKeyUsage // Sequence of extended key usages.
- UnknownExtKeyUsage []asn1.ObjectIdentifier // Encountered extended key usages unknown to this package.
-
- BasicConstraintsValid bool // if true then the next two fields are valid.
- IsCA bool
- MaxPathLen int
- // MaxPathLenZero indicates that BasicConstraintsValid==true and
- // MaxPathLen==0 should be interpreted as an actual maximum path length
- // of zero. Otherwise, that combination is interpreted as MaxPathLen
- // not being set.
- MaxPathLenZero bool
-
- SubjectKeyId []byte
- AuthorityKeyId []byte
-
- // RFC 5280, 4.2.2.1 (Authority Information Access)
- OCSPServer []string
- IssuingCertificateURL []string
-
- // Subject Alternate Name values
- DNSNames []string
- EmailAddresses []string
- IPAddresses []net.IP
-
- // Name constraints
- PermittedDNSDomainsCritical bool // if true then the name constraints are marked critical.
- PermittedDNSDomains []string
-
- // CRL Distribution Points
- CRLDistributionPoints []string
-
- PolicyIdentifiers []asn1.ObjectIdentifier
-}
-
-// ErrUnsupportedAlgorithm results from attempting to perform an operation that
-// involves algorithms that are not currently implemented.
-var ErrUnsupportedAlgorithm = errors.New("x509: cannot verify signature: algorithm unimplemented")
-
-// An InsecureAlgorithmError
-type InsecureAlgorithmError SignatureAlgorithm
-
-func (e InsecureAlgorithmError) Error() string {
- return fmt.Sprintf("x509: cannot verify signature: insecure algorithm %v", SignatureAlgorithm(e))
-}
-
-// ConstraintViolationError results when a requested usage is not permitted by
-// a certificate. For example: checking a signature when the public key isn't a
-// certificate signing key.
-type ConstraintViolationError struct{}
-
-func (ConstraintViolationError) Error() string {
- return "x509: invalid signature: parent certificate cannot sign this kind of certificate"
-}
-
-func (c *Certificate) Equal(other *Certificate) bool {
- return bytes.Equal(c.Raw, other.Raw)
-}
-
-// Entrust have a broken root certificate (CN=Entrust.net Certification
-// Authority (2048)) which isn't marked as a CA certificate and is thus invalid
-// according to PKIX.
-// We recognise this certificate by its SubjectPublicKeyInfo and exempt it
-// from the Basic Constraints requirement.
-// See http://www.entrust.net/knowledge-base/technote.cfm?tn=7869
-//
-// TODO(agl): remove this hack once their reissued root is sufficiently
-// widespread.
-var entrustBrokenSPKI = []byte{
- 0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09,
- 0x2a, 0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01,
- 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00,
- 0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01,
- 0x00, 0x97, 0xa3, 0x2d, 0x3c, 0x9e, 0xde, 0x05,
- 0xda, 0x13, 0xc2, 0x11, 0x8d, 0x9d, 0x8e, 0xe3,
- 0x7f, 0xc7, 0x4b, 0x7e, 0x5a, 0x9f, 0xb3, 0xff,
- 0x62, 0xab, 0x73, 0xc8, 0x28, 0x6b, 0xba, 0x10,
- 0x64, 0x82, 0x87, 0x13, 0xcd, 0x57, 0x18, 0xff,
- 0x28, 0xce, 0xc0, 0xe6, 0x0e, 0x06, 0x91, 0x50,
- 0x29, 0x83, 0xd1, 0xf2, 0xc3, 0x2a, 0xdb, 0xd8,
- 0xdb, 0x4e, 0x04, 0xcc, 0x00, 0xeb, 0x8b, 0xb6,
- 0x96, 0xdc, 0xbc, 0xaa, 0xfa, 0x52, 0x77, 0x04,
- 0xc1, 0xdb, 0x19, 0xe4, 0xae, 0x9c, 0xfd, 0x3c,
- 0x8b, 0x03, 0xef, 0x4d, 0xbc, 0x1a, 0x03, 0x65,
- 0xf9, 0xc1, 0xb1, 0x3f, 0x72, 0x86, 0xf2, 0x38,
- 0xaa, 0x19, 0xae, 0x10, 0x88, 0x78, 0x28, 0xda,
- 0x75, 0xc3, 0x3d, 0x02, 0x82, 0x02, 0x9c, 0xb9,
- 0xc1, 0x65, 0x77, 0x76, 0x24, 0x4c, 0x98, 0xf7,
- 0x6d, 0x31, 0x38, 0xfb, 0xdb, 0xfe, 0xdb, 0x37,
- 0x02, 0x76, 0xa1, 0x18, 0x97, 0xa6, 0xcc, 0xde,
- 0x20, 0x09, 0x49, 0x36, 0x24, 0x69, 0x42, 0xf6,
- 0xe4, 0x37, 0x62, 0xf1, 0x59, 0x6d, 0xa9, 0x3c,
- 0xed, 0x34, 0x9c, 0xa3, 0x8e, 0xdb, 0xdc, 0x3a,
- 0xd7, 0xf7, 0x0a, 0x6f, 0xef, 0x2e, 0xd8, 0xd5,
- 0x93, 0x5a, 0x7a, 0xed, 0x08, 0x49, 0x68, 0xe2,
- 0x41, 0xe3, 0x5a, 0x90, 0xc1, 0x86, 0x55, 0xfc,
- 0x51, 0x43, 0x9d, 0xe0, 0xb2, 0xc4, 0x67, 0xb4,
- 0xcb, 0x32, 0x31, 0x25, 0xf0, 0x54, 0x9f, 0x4b,
- 0xd1, 0x6f, 0xdb, 0xd4, 0xdd, 0xfc, 0xaf, 0x5e,
- 0x6c, 0x78, 0x90, 0x95, 0xde, 0xca, 0x3a, 0x48,
- 0xb9, 0x79, 0x3c, 0x9b, 0x19, 0xd6, 0x75, 0x05,
- 0xa0, 0xf9, 0x88, 0xd7, 0xc1, 0xe8, 0xa5, 0x09,
- 0xe4, 0x1a, 0x15, 0xdc, 0x87, 0x23, 0xaa, 0xb2,
- 0x75, 0x8c, 0x63, 0x25, 0x87, 0xd8, 0xf8, 0x3d,
- 0xa6, 0xc2, 0xcc, 0x66, 0xff, 0xa5, 0x66, 0x68,
- 0x55, 0x02, 0x03, 0x01, 0x00, 0x01,
-}
-
-// CheckSignatureFrom verifies that the signature on c is a valid signature
-// from parent.
-func (c *Certificate) CheckSignatureFrom(parent *Certificate) error {
- // RFC 5280, 4.2.1.9:
- // "If the basic constraints extension is not present in a version 3
- // certificate, or the extension is present but the cA boolean is not
- // asserted, then the certified public key MUST NOT be used to verify
- // certificate signatures."
- // (except for Entrust, see comment above entrustBrokenSPKI)
- if (parent.Version == 3 && !parent.BasicConstraintsValid ||
- parent.BasicConstraintsValid && !parent.IsCA) &&
- !bytes.Equal(c.RawSubjectPublicKeyInfo, entrustBrokenSPKI) {
- return ConstraintViolationError{}
- }
-
- if parent.KeyUsage != 0 && parent.KeyUsage&KeyUsageCertSign == 0 {
- return ConstraintViolationError{}
- }
-
- if parent.PublicKeyAlgorithm == UnknownPublicKeyAlgorithm {
- return ErrUnsupportedAlgorithm
- }
-
- // TODO(agl): don't ignore the path length constraint.
-
- return parent.CheckSignature(c.SignatureAlgorithm, c.RawTBSCertificate, c.Signature)
-}
-
-// CheckSignature verifies that signature is a valid signature over signed from
-// c's public key.
-func (c *Certificate) CheckSignature(algo SignatureAlgorithm, signed, signature []byte) error {
- return checkSignature(algo, signed, signature, c.PublicKey)
-}
-
-// CheckSignature verifies that signature is a valid signature over signed from
-// a crypto.PublicKey.
-func checkSignature(algo SignatureAlgorithm, signed, signature []byte, publicKey crypto.PublicKey) (err error) {
- var hashType Hash
-
- switch algo {
- case SHA1WithRSA, DSAWithSHA1, ECDSAWithSHA1, SM2WithSHA1:
- hashType = SHA1
- case SHA256WithRSA, SHA256WithRSAPSS, DSAWithSHA256, ECDSAWithSHA256, SM2WithSHA256:
- hashType = SHA256
- case SHA384WithRSA, SHA384WithRSAPSS, ECDSAWithSHA384:
- hashType = SHA384
- case SHA512WithRSA, SHA512WithRSAPSS, ECDSAWithSHA512:
- hashType = SHA512
- case MD2WithRSA, MD5WithRSA:
- return InsecureAlgorithmError(algo)
- case SM2WithSM3: // SM3WithRSA reserve
- hashType = SM3
- default:
- return ErrUnsupportedAlgorithm
- }
-
- if !hashType.Available() {
- return ErrUnsupportedAlgorithm
- }
- h := hashType.New()
-
- h.Write(signed)
- digest := h.Sum(nil)
-
- switch pub := publicKey.(type) {
- case *rsa.PublicKey:
- if algo.isRSAPSS() {
- return rsa.VerifyPSS(pub, crypto.Hash(hashType), digest, signature, &rsa.PSSOptions{SaltLength: rsa.PSSSaltLengthEqualsHash})
- } else {
- return rsa.VerifyPKCS1v15(pub, crypto.Hash(hashType), digest, signature)
- }
- case *dsa.PublicKey:
- dsaSig := new(dsaSignature)
- if rest, err := asn1.Unmarshal(signature, dsaSig); err != nil {
- return err
- } else if len(rest) != 0 {
- return errors.New("x509: trailing data after DSA signature")
- }
- if dsaSig.R.Sign() <= 0 || dsaSig.S.Sign() <= 0 {
- return errors.New("x509: DSA signature contained zero or negative values")
- }
- if !dsa.Verify(pub, digest, dsaSig.R, dsaSig.S) {
- return errors.New("x509: DSA verification failure")
- }
- return
- case *ecdsa.PublicKey:
- ecdsaSig := new(ecdsaSignature)
- if rest, err := asn1.Unmarshal(signature, ecdsaSig); err != nil {
- return err
- } else if len(rest) != 0 {
- return errors.New("x509: trailing data after ECDSA signature")
- }
- if ecdsaSig.R.Sign() <= 0 || ecdsaSig.S.Sign() <= 0 {
- return errors.New("x509: ECDSA signature contained zero or negative values")
- }
- switch pub.Curve {
- case P256Sm2():
- if !Verify(&PublicKey{
- Curve: pub.Curve,
- X: pub.X,
- Y: pub.Y,
- }, digest, ecdsaSig.R, ecdsaSig.S) {
- return errors.New("x509: SM2 verification failure")
- }
- default:
- if !ecdsa.Verify(pub, digest, ecdsaSig.R, ecdsaSig.S) {
- return errors.New("x509: ECDSA verification failure")
- }
- }
- return
- }
- return ErrUnsupportedAlgorithm
-}
-
-// CheckCRLSignature checks that the signature in crl is from c.
-func (c *Certificate) CheckCRLSignature(crl *pkix.CertificateList) error {
- algo := getSignatureAlgorithmFromAI(crl.SignatureAlgorithm)
- return c.CheckSignature(algo, crl.TBSCertList.Raw, crl.SignatureValue.RightAlign())
-}
-
-type UnhandledCriticalExtension struct{}
-
-func (h UnhandledCriticalExtension) Error() string {
- return "x509: unhandled critical extension"
-}
-
-type basicConstraints struct {
- IsCA bool `asn1:"optional"`
- MaxPathLen int `asn1:"optional,default:-1"`
-}
-
-// RFC 5280 4.2.1.4
-type policyInformation struct {
- Policy asn1.ObjectIdentifier
- // policyQualifiers omitted
-}
-
-// RFC 5280, 4.2.1.10
-type nameConstraints struct {
- Permitted []generalSubtree `asn1:"optional,tag:0"`
- Excluded []generalSubtree `asn1:"optional,tag:1"`
-}
-
-type generalSubtree struct {
- Name string `asn1:"tag:2,optional,ia5"`
-}
-
-// RFC 5280, 4.2.2.1
-type authorityInfoAccess struct {
- Method asn1.ObjectIdentifier
- Location asn1.RawValue
-}
-
-// RFC 5280, 4.2.1.14
-type distributionPoint struct {
- DistributionPoint distributionPointName `asn1:"optional,tag:0"`
- Reason asn1.BitString `asn1:"optional,tag:1"`
- CRLIssuer asn1.RawValue `asn1:"optional,tag:2"`
-}
-
-type distributionPointName struct {
- FullName asn1.RawValue `asn1:"optional,tag:0"`
- RelativeName pkix.RDNSequence `asn1:"optional,tag:1"`
-}
-
-// asn1Null is the ASN.1 encoding of a NULL value.
-var asn1Null = []byte{5, 0}
-
-func parsePublicKey(algo PublicKeyAlgorithm, keyData *publicKeyInfo) (interface{}, error) {
- asn1Data := keyData.PublicKey.RightAlign()
- switch algo {
- case RSA:
- // RSA public keys must have a NULL in the parameters
- // (https://tools.ietf.org/html/rfc3279#section-2.3.1).
- if !bytes.Equal(keyData.Algorithm.Parameters.FullBytes, asn1Null) {
- return nil, errors.New("x509: RSA key missing NULL parameters")
- }
-
- p := new(rsaPublicKey)
- rest, err := asn1.Unmarshal(asn1Data, p)
- if err != nil {
- return nil, err
- }
- if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after RSA public key")
- }
-
- if p.N.Sign() <= 0 {
- return nil, errors.New("x509: RSA modulus is not a positive number")
- }
- if p.E <= 0 {
- return nil, errors.New("x509: RSA public exponent is not a positive number")
- }
-
- pub := &rsa.PublicKey{
- E: p.E,
- N: p.N,
- }
- return pub, nil
- case DSA:
- var p *big.Int
- rest, err := asn1.Unmarshal(asn1Data, &p)
- if err != nil {
- return nil, err
- }
- if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after DSA public key")
- }
- paramsData := keyData.Algorithm.Parameters.FullBytes
- params := new(dsaAlgorithmParameters)
- rest, err = asn1.Unmarshal(paramsData, params)
- if err != nil {
- return nil, err
- }
- if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after DSA parameters")
- }
- if p.Sign() <= 0 || params.P.Sign() <= 0 || params.Q.Sign() <= 0 || params.G.Sign() <= 0 {
- return nil, errors.New("x509: zero or negative DSA parameter")
- }
- pub := &dsa.PublicKey{
- Parameters: dsa.Parameters{
- P: params.P,
- Q: params.Q,
- G: params.G,
- },
- Y: p,
- }
- return pub, nil
- case ECDSA:
- paramsData := keyData.Algorithm.Parameters.FullBytes
- namedCurveOID := new(asn1.ObjectIdentifier)
- rest, err := asn1.Unmarshal(paramsData, namedCurveOID)
- if err != nil {
- return nil, err
- }
- if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after ECDSA parameters")
- }
- namedCurve := namedCurveFromOID(*namedCurveOID)
- if namedCurve == nil {
- return nil, errors.New("x509: unsupported elliptic curve")
- }
- x, y := elliptic.Unmarshal(namedCurve, asn1Data)
- if x == nil {
- return nil, errors.New("x509: failed to unmarshal elliptic curve point")
- }
- pub := &ecdsa.PublicKey{
- Curve: namedCurve,
- X: x,
- Y: y,
- }
- return pub, nil
- default:
- return nil, nil
- }
-}
-
-func parseSANExtension(value []byte) (dnsNames, emailAddresses []string, ipAddresses []net.IP, err error) {
- // RFC 5280, 4.2.1.6
-
- // SubjectAltName ::= GeneralNames
- //
- // GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
- //
- // GeneralName ::= CHOICE {
- // otherName [0] OtherName,
- // rfc822Name [1] IA5String,
- // dNSName [2] IA5String,
- // x400Address [3] ORAddress,
- // directoryName [4] Name,
- // ediPartyName [5] EDIPartyName,
- // uniformResourceIdentifier [6] IA5String,
- // iPAddress [7] OCTET STRING,
- // registeredID [8] OBJECT IDENTIFIER }
- var seq asn1.RawValue
- var rest []byte
- if rest, err = asn1.Unmarshal(value, &seq); err != nil {
- return
- } else if len(rest) != 0 {
- err = errors.New("x509: trailing data after X.509 extension")
- return
- }
- if !seq.IsCompound || seq.Tag != 16 || seq.Class != 0 {
- err = asn1.StructuralError{Msg: "bad SAN sequence"}
- return
- }
-
- rest = seq.Bytes
- for len(rest) > 0 {
- var v asn1.RawValue
- rest, err = asn1.Unmarshal(rest, &v)
- if err != nil {
- return
- }
- switch v.Tag {
- case 1:
- emailAddresses = append(emailAddresses, string(v.Bytes))
- case 2:
- dnsNames = append(dnsNames, string(v.Bytes))
- case 7:
- switch len(v.Bytes) {
- case net.IPv4len, net.IPv6len:
- ipAddresses = append(ipAddresses, v.Bytes)
- default:
- err = errors.New("x509: certificate contained IP address of length " + strconv.Itoa(len(v.Bytes)))
- return
- }
- }
- }
-
- return
-}
-
-func parseCertificate(in *certificate) (*Certificate, error) {
- out := new(Certificate)
- out.Raw = in.Raw
- out.RawTBSCertificate = in.TBSCertificate.Raw
- out.RawSubjectPublicKeyInfo = in.TBSCertificate.PublicKey.Raw
- out.RawSubject = in.TBSCertificate.Subject.FullBytes
- out.RawIssuer = in.TBSCertificate.Issuer.FullBytes
-
- out.Signature = in.SignatureValue.RightAlign()
- out.SignatureAlgorithm =
- getSignatureAlgorithmFromAI(in.TBSCertificate.SignatureAlgorithm)
-
- out.PublicKeyAlgorithm =
- getPublicKeyAlgorithmFromOID(in.TBSCertificate.PublicKey.Algorithm.Algorithm)
- var err error
- out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCertificate.PublicKey)
- if err != nil {
- return nil, err
- }
-
- out.Version = in.TBSCertificate.Version + 1
- out.SerialNumber = in.TBSCertificate.SerialNumber
-
- var issuer, subject pkix.RDNSequence
- if rest, err := asn1.Unmarshal(in.TBSCertificate.Subject.FullBytes, &subject); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 subject")
- }
- if rest, err := asn1.Unmarshal(in.TBSCertificate.Issuer.FullBytes, &issuer); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 subject")
- }
-
- out.Issuer.FillFromRDNSequence(&issuer)
- out.Subject.FillFromRDNSequence(&subject)
-
- out.NotBefore = in.TBSCertificate.Validity.NotBefore
- out.NotAfter = in.TBSCertificate.Validity.NotAfter
-
- for _, e := range in.TBSCertificate.Extensions {
- out.Extensions = append(out.Extensions, e)
- unhandled := false
-
- if len(e.Id) == 4 && e.Id[0] == 2 && e.Id[1] == 5 && e.Id[2] == 29 {
- switch e.Id[3] {
- case 15:
- // RFC 5280, 4.2.1.3
- var usageBits asn1.BitString
- if rest, err := asn1.Unmarshal(e.Value, &usageBits); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 KeyUsage")
- }
-
- var usage int
- for i := 0; i < 9; i++ {
- if usageBits.At(i) != 0 {
- usage |= 1 << uint(i)
- }
- }
- out.KeyUsage = KeyUsage(usage)
-
- case 19:
- // RFC 5280, 4.2.1.9
- var constraints basicConstraints
- if rest, err := asn1.Unmarshal(e.Value, &constraints); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 BasicConstraints")
- }
-
- out.BasicConstraintsValid = true
- out.IsCA = constraints.IsCA
- out.MaxPathLen = constraints.MaxPathLen
- out.MaxPathLenZero = out.MaxPathLen == 0
-
- case 17:
- out.DNSNames, out.EmailAddresses, out.IPAddresses, err = parseSANExtension(e.Value)
- if err != nil {
- return nil, err
- }
-
- if len(out.DNSNames) == 0 && len(out.EmailAddresses) == 0 && len(out.IPAddresses) == 0 {
- // If we didn't parse anything then we do the critical check, below.
- unhandled = true
- }
-
- case 30:
- // RFC 5280, 4.2.1.10
-
- // NameConstraints ::= SEQUENCE {
- // permittedSubtrees [0] GeneralSubtrees OPTIONAL,
- // excludedSubtrees [1] GeneralSubtrees OPTIONAL }
- //
- // GeneralSubtrees ::= SEQUENCE SIZE (1..MAX) OF GeneralSubtree
- //
- // GeneralSubtree ::= SEQUENCE {
- // base GeneralName,
- // minimum [0] BaseDistance DEFAULT 0,
- // maximum [1] BaseDistance OPTIONAL }
- //
- // BaseDistance ::= INTEGER (0..MAX)
-
- var constraints nameConstraints
- if rest, err := asn1.Unmarshal(e.Value, &constraints); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 NameConstraints")
- }
-
- if len(constraints.Excluded) > 0 && e.Critical {
- return out, UnhandledCriticalExtension{}
- }
-
- for _, subtree := range constraints.Permitted {
- if len(subtree.Name) == 0 {
- if e.Critical {
- return out, UnhandledCriticalExtension{}
- }
- continue
- }
- out.PermittedDNSDomains = append(out.PermittedDNSDomains, subtree.Name)
- }
-
- case 31:
- // RFC 5280, 4.2.1.13
-
- // CRLDistributionPoints ::= SEQUENCE SIZE (1..MAX) OF DistributionPoint
- //
- // DistributionPoint ::= SEQUENCE {
- // distributionPoint [0] DistributionPointName OPTIONAL,
- // reasons [1] ReasonFlags OPTIONAL,
- // cRLIssuer [2] GeneralNames OPTIONAL }
- //
- // DistributionPointName ::= CHOICE {
- // fullName [0] GeneralNames,
- // nameRelativeToCRLIssuer [1] RelativeDistinguishedName }
-
- var cdp []distributionPoint
- if rest, err := asn1.Unmarshal(e.Value, &cdp); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 CRL distribution point")
- }
-
- for i := range cdp {
- // use index & pointer here to avoid value copy (each iteration copies 200 bytes)
- dp := &cdp[i]
- // Per RFC 5280, 4.2.1.13, one of distributionPoint or cRLIssuer may be empty.
- if len(dp.DistributionPoint.FullName.Bytes) == 0 {
- continue
- }
-
- var n asn1.RawValue
- if _, err := asn1.Unmarshal(dp.DistributionPoint.FullName.Bytes, &n); err != nil {
- return nil, err
- }
- // Trailing data after the fullName is
- // allowed because other elements of
- // the SEQUENCE can appear.
-
- if n.Tag == 6 {
- out.CRLDistributionPoints = append(out.CRLDistributionPoints, string(n.Bytes))
- }
- }
-
- case 35:
- // RFC 5280, 4.2.1.1
- var a authKeyId
- if rest, err := asn1.Unmarshal(e.Value, &a); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 authority key-id")
- }
- out.AuthorityKeyId = a.Id
-
- case 37:
- // RFC 5280, 4.2.1.12. Extended Key Usage
-
- // id-ce-extKeyUsage OBJECT IDENTIFIER ::= { id-ce 37 }
- //
- // ExtKeyUsageSyntax ::= SEQUENCE SIZE (1..MAX) OF KeyPurposeId
- //
- // KeyPurposeId ::= OBJECT IDENTIFIER
-
- var keyUsage []asn1.ObjectIdentifier
- if rest, err := asn1.Unmarshal(e.Value, &keyUsage); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 ExtendedKeyUsage")
- }
-
- for _, u := range keyUsage {
- if extKeyUsage, ok := extKeyUsageFromOID(u); ok {
- out.ExtKeyUsage = append(out.ExtKeyUsage, extKeyUsage)
- } else {
- out.UnknownExtKeyUsage = append(out.UnknownExtKeyUsage, u)
- }
- }
-
- case 14:
- // RFC 5280, 4.2.1.2
- var keyid []byte
- if rest, err := asn1.Unmarshal(e.Value, &keyid); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 key-id")
- }
- out.SubjectKeyId = keyid
-
- case 32:
- // RFC 5280 4.2.1.4: Certificate Policies
- var policies []policyInformation
- if rest, err := asn1.Unmarshal(e.Value, &policies); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 certificate policies")
- }
- out.PolicyIdentifiers = make([]asn1.ObjectIdentifier, len(policies))
- for i, policy := range policies {
- out.PolicyIdentifiers[i] = policy.Policy
- }
-
- default:
- // Unknown extensions are recorded if critical.
- unhandled = true
- }
- } else if e.Id.Equal(oidExtensionAuthorityInfoAccess) {
- // RFC 5280 4.2.2.1: Authority Information Access
- var aia []authorityInfoAccess
- if rest, err := asn1.Unmarshal(e.Value, &aia); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 authority information")
- }
-
- for _, v := range aia {
- // GeneralName: uniformResourceIdentifier [6] IA5String
- if v.Location.Tag != 6 {
- continue
- }
- if v.Method.Equal(oidAuthorityInfoAccessOcsp) {
- out.OCSPServer = append(out.OCSPServer, string(v.Location.Bytes))
- } else if v.Method.Equal(oidAuthorityInfoAccessIssuers) {
- out.IssuingCertificateURL = append(out.IssuingCertificateURL, string(v.Location.Bytes))
- }
- }
- } else {
- // Unknown extensions are recorded if critical.
- unhandled = true
- }
-
- if e.Critical && unhandled {
- out.UnhandledCriticalExtensions = append(out.UnhandledCriticalExtensions, e.Id)
- }
- }
-
- return out, nil
-}
-
-// ParseCertificate parses a single certificate from the given ASN.1 DER data.
-func ParseCertificate(asn1Data []byte) (*Certificate, error) {
- var cert certificate
- rest, err := asn1.Unmarshal(asn1Data, &cert)
- if err != nil {
- return nil, err
- }
- if len(rest) > 0 {
- return nil, asn1.SyntaxError{Msg: "trailing data"}
- }
-
- return parseCertificate(&cert)
-}
-
-// ParseCertificates parses one or more certificates from the given ASN.1 DER
-// data. The certificates must be concatenated with no intermediate padding.
-func ParseCertificates(asn1Data []byte) ([]*Certificate, error) {
- var v []*certificate
-
- for len(asn1Data) > 0 {
- cert := new(certificate)
- var err error
- asn1Data, err = asn1.Unmarshal(asn1Data, cert)
- if err != nil {
- return nil, err
- }
- v = append(v, cert)
- }
-
- ret := make([]*Certificate, len(v))
- for i, ci := range v {
- cert, err := parseCertificate(ci)
- if err != nil {
- return nil, err
- }
- ret[i] = cert
- }
-
- return ret, nil
-}
-
-func reverseBitsInAByte(in byte) byte {
- b1 := in>>4 | in<<4
- b2 := b1>>2&0x33 | b1<<2&0xcc
- b3 := b2>>1&0x55 | b2<<1&0xaa
- return b3
-}
-
-// asn1BitLength returns the bit-length of bitString by considering the
-// most-significant bit in a byte to be the "first" bit. This convention
-// matches ASN.1, but differs from almost everything else.
-func asn1BitLength(bitString []byte) int {
- bitLen := len(bitString) * 8
-
- for i := range bitString {
- b := bitString[len(bitString)-i-1]
-
- for bit := uint(0); bit < 8; bit++ {
- if (b>>bit)&1 == 1 {
- return bitLen
- }
- bitLen--
- }
- }
-
- return 0
-}
-
-var (
- oidExtensionSubjectKeyId = []int{2, 5, 29, 14}
- oidExtensionKeyUsage = []int{2, 5, 29, 15}
- oidExtensionExtendedKeyUsage = []int{2, 5, 29, 37}
- oidExtensionAuthorityKeyId = []int{2, 5, 29, 35}
- oidExtensionBasicConstraints = []int{2, 5, 29, 19}
- oidExtensionSubjectAltName = []int{2, 5, 29, 17}
- oidExtensionCertificatePolicies = []int{2, 5, 29, 32}
- oidExtensionNameConstraints = []int{2, 5, 29, 30}
- oidExtensionCRLDistributionPoints = []int{2, 5, 29, 31}
- oidExtensionAuthorityInfoAccess = []int{1, 3, 6, 1, 5, 5, 7, 1, 1}
-)
-
-var (
- oidAuthorityInfoAccessOcsp = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 1}
- oidAuthorityInfoAccessIssuers = asn1.ObjectIdentifier{1, 3, 6, 1, 5, 5, 7, 48, 2}
-)
-
-// oidNotInExtensions returns whether an extension with the given oid exists in
-// extensions.
-func oidInExtensions(oid asn1.ObjectIdentifier, extensions []pkix.Extension) bool {
- for _, e := range extensions {
- if e.Id.Equal(oid) {
- return true
- }
- }
- return false
-}
-
-// marshalSANs marshals a list of addresses into a the contents of an X.509
-// SubjectAlternativeName extension.
-func marshalSANs(dnsNames, emailAddresses []string, ipAddresses []net.IP) (derBytes []byte, err error) {
- var rawValues []asn1.RawValue
- for _, name := range dnsNames {
- rawValues = append(rawValues, asn1.RawValue{Tag: 2, Class: 2, Bytes: []byte(name)})
- }
- for _, email := range emailAddresses {
- rawValues = append(rawValues, asn1.RawValue{Tag: 1, Class: 2, Bytes: []byte(email)})
- }
- for _, rawIP := range ipAddresses {
- // If possible, we always want to encode IPv4 addresses in 4 bytes.
- ip := rawIP.To4()
- if ip == nil {
- ip = rawIP
- }
- rawValues = append(rawValues, asn1.RawValue{Tag: 7, Class: 2, Bytes: ip})
- }
- return asn1.Marshal(rawValues)
-}
-
-func buildExtensions(template *Certificate) (ret []pkix.Extension, err error) {
- ret = make([]pkix.Extension, 10 /* maximum number of elements. */)
- n := 0
-
- if template.KeyUsage != 0 &&
- !oidInExtensions(oidExtensionKeyUsage, template.ExtraExtensions) {
- ret[n].Id = oidExtensionKeyUsage
- ret[n].Critical = true
-
- var a [2]byte
- a[0] = reverseBitsInAByte(byte(template.KeyUsage))
- a[1] = reverseBitsInAByte(byte(template.KeyUsage >> 8))
-
- l := 1
- if a[1] != 0 {
- l = 2
- }
-
- bitString := a[:l]
- ret[n].Value, err = asn1.Marshal(asn1.BitString{Bytes: bitString, BitLength: asn1BitLength(bitString)})
- if err != nil {
- return
- }
- n++
- }
-
- if (len(template.ExtKeyUsage) > 0 || len(template.UnknownExtKeyUsage) > 0) &&
- !oidInExtensions(oidExtensionExtendedKeyUsage, template.ExtraExtensions) {
- ret[n].Id = oidExtensionExtendedKeyUsage
-
- var oids []asn1.ObjectIdentifier
- for _, u := range template.ExtKeyUsage {
- if oid, ok := oidFromExtKeyUsage(u); ok {
- oids = append(oids, oid)
- } else {
- panic("internal error")
- }
- }
-
- oids = append(oids, template.UnknownExtKeyUsage...)
-
- ret[n].Value, err = asn1.Marshal(oids)
- if err != nil {
- return
- }
- n++
- }
-
- if template.BasicConstraintsValid && !oidInExtensions(oidExtensionBasicConstraints, template.ExtraExtensions) {
- // Leaving MaxPathLen as zero indicates that no maximum path
- // length is desired, unless MaxPathLenZero is set. A value of
- // -1 causes encoding/asn1 to omit the value as desired.
- maxPathLen := template.MaxPathLen
- if maxPathLen == 0 && !template.MaxPathLenZero {
- maxPathLen = -1
- }
- ret[n].Id = oidExtensionBasicConstraints
- ret[n].Value, err = asn1.Marshal(basicConstraints{template.IsCA, maxPathLen})
- ret[n].Critical = true
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.SubjectKeyId) > 0 && !oidInExtensions(oidExtensionSubjectKeyId, template.ExtraExtensions) {
- ret[n].Id = oidExtensionSubjectKeyId
- ret[n].Value, err = asn1.Marshal(template.SubjectKeyId)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.AuthorityKeyId) > 0 && !oidInExtensions(oidExtensionAuthorityKeyId, template.ExtraExtensions) {
- ret[n].Id = oidExtensionAuthorityKeyId
- ret[n].Value, err = asn1.Marshal(authKeyId{template.AuthorityKeyId})
- if err != nil {
- return
- }
- n++
- }
-
- if (len(template.OCSPServer) > 0 || len(template.IssuingCertificateURL) > 0) &&
- !oidInExtensions(oidExtensionAuthorityInfoAccess, template.ExtraExtensions) {
- ret[n].Id = oidExtensionAuthorityInfoAccess
- var aiaValues []authorityInfoAccess
- for _, name := range template.OCSPServer {
- aiaValues = append(aiaValues, authorityInfoAccess{
- Method: oidAuthorityInfoAccessOcsp,
- Location: asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)},
- })
- }
- for _, name := range template.IssuingCertificateURL {
- aiaValues = append(aiaValues, authorityInfoAccess{
- Method: oidAuthorityInfoAccessIssuers,
- Location: asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)},
- })
- }
- ret[n].Value, err = asn1.Marshal(aiaValues)
- if err != nil {
- return
- }
- n++
- }
-
- if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0) &&
- !oidInExtensions(oidExtensionSubjectAltName, template.ExtraExtensions) {
- ret[n].Id = oidExtensionSubjectAltName
- ret[n].Value, err = marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.PolicyIdentifiers) > 0 &&
- !oidInExtensions(oidExtensionCertificatePolicies, template.ExtraExtensions) {
- ret[n].Id = oidExtensionCertificatePolicies
- policies := make([]policyInformation, len(template.PolicyIdentifiers))
- for i, policy := range template.PolicyIdentifiers {
- policies[i].Policy = policy
- }
- ret[n].Value, err = asn1.Marshal(policies)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.PermittedDNSDomains) > 0 &&
- !oidInExtensions(oidExtensionNameConstraints, template.ExtraExtensions) {
- ret[n].Id = oidExtensionNameConstraints
- ret[n].Critical = template.PermittedDNSDomainsCritical
-
- var out nameConstraints
- out.Permitted = make([]generalSubtree, len(template.PermittedDNSDomains))
- for i, permitted := range template.PermittedDNSDomains {
- out.Permitted[i] = generalSubtree{Name: permitted}
- }
- ret[n].Value, err = asn1.Marshal(out)
- if err != nil {
- return
- }
- n++
- }
-
- if len(template.CRLDistributionPoints) > 0 &&
- !oidInExtensions(oidExtensionCRLDistributionPoints, template.ExtraExtensions) {
- ret[n].Id = oidExtensionCRLDistributionPoints
-
- var crlDp []distributionPoint
- for _, name := range template.CRLDistributionPoints {
- rawFullName, _ := asn1.Marshal(asn1.RawValue{Tag: 6, Class: 2, Bytes: []byte(name)})
-
- dp := distributionPoint{
- DistributionPoint: distributionPointName{
- FullName: asn1.RawValue{Tag: 0, Class: 2, IsCompound: true, Bytes: rawFullName},
- },
- }
- crlDp = append(crlDp, dp)
- }
-
- ret[n].Value, err = asn1.Marshal(crlDp)
- if err != nil {
- return
- }
- n++
- }
-
- // Adding another extension here? Remember to update the maximum number
- // of elements in the make() at the top of the function.
-
- return append(ret[:n], template.ExtraExtensions...), nil
-}
-
-func subjectBytes(cert *Certificate) ([]byte, error) {
- if len(cert.RawSubject) > 0 {
- return cert.RawSubject, nil
- }
-
- return asn1.Marshal(cert.Subject.ToRDNSequence())
-}
-
-// signingParamsForPublicKey returns the parameters to use for signing with
-// priv. If requestedSigAlgo is not zero then it overrides the default
-// signature algorithm.
-func signingParamsForPublicKey(pub interface{}, requestedSigAlgo SignatureAlgorithm) (hashFunc Hash, sigAlgo pkix.AlgorithmIdentifier, err error) {
- var pubType PublicKeyAlgorithm
-
- switch pub := pub.(type) {
- case *rsa.PublicKey:
- pubType = RSA
- hashFunc = SHA256
- sigAlgo.Algorithm = oidSignatureSHA256WithRSA
- sigAlgo.Parameters = asn1.RawValue{
- Tag: 5,
- }
-
- case *ecdsa.PublicKey:
- pubType = ECDSA
- switch pub.Curve {
- case elliptic.P224(), elliptic.P256():
- hashFunc = SHA256
- sigAlgo.Algorithm = oidSignatureECDSAWithSHA256
- case elliptic.P384():
- hashFunc = SHA384
- sigAlgo.Algorithm = oidSignatureECDSAWithSHA384
- case elliptic.P521():
- hashFunc = SHA512
- sigAlgo.Algorithm = oidSignatureECDSAWithSHA512
- default:
- err = errors.New("x509: unknown elliptic curve")
- }
- case *PublicKey:
- pubType = ECDSA
- switch pub.Curve {
- case P256Sm2():
- hashFunc = SM3
- sigAlgo.Algorithm = oidSignatureSM2WithSM3
- default:
- err = errors.New("x509: unknown SM2 curve")
- }
- default:
- err = errors.New("x509: only RSA and ECDSA keys supported")
- }
-
- if err != nil {
- return
- }
-
- if requestedSigAlgo == 0 {
- return
- }
-
- found := false
- for _, details := range signatureAlgorithmDetails {
- if details.algo == requestedSigAlgo {
- if details.pubKeyAlgo != pubType {
- err = errors.New("x509: requested SignatureAlgorithm does not match private key type")
- return
- }
- sigAlgo.Algorithm, hashFunc = details.oid, details.hash
- if hashFunc == 0 {
- err = errors.New("x509: cannot sign with hash function requested")
- return
- }
- if requestedSigAlgo.isRSAPSS() {
- sigAlgo.Parameters = rsaPSSParameters(hashFunc)
- }
- found = true
- break
- }
- }
-
- if !found {
- err = errors.New("x509: unknown SignatureAlgorithm")
- }
-
- return
-}
-
-// CreateCertificate creates a new certificate based on a template. The
-// following members of template are used: SerialNumber, Subject, NotBefore,
-// NotAfter, KeyUsage, ExtKeyUsage, UnknownExtKeyUsage, BasicConstraintsValid,
-// IsCA, MaxPathLen, SubjectKeyId, DNSNames, PermittedDNSDomainsCritical,
-// PermittedDNSDomains, SignatureAlgorithm.
-//
-// The certificate is signed by parent. If parent is equal to template then the
-// certificate is self-signed. The parameter pub is the public key of the
-// signee and priv is the private key of the signer.
-//
-// The returned slice is the certificate in DER encoding.
-//
-// All keys types that are implemented via crypto.Signer are supported (This
-// includes *rsa.PublicKey and *ecdsa.PublicKey.)
-func CreateCertificate(rand io.Reader, template, parent *Certificate, pub, priv interface{}) (cert []byte, err error) {
- key, ok := priv.(crypto.Signer)
- if !ok {
- return nil, errors.New("x509: certificate private key does not implement crypto.Signer")
- }
-
- if template.SerialNumber == nil {
- return nil, errors.New("x509: no SerialNumber given")
- }
-
- hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(key.Public(), template.SignatureAlgorithm)
- if err != nil {
- return nil, err
- }
-
- publicKeyBytes, publicKeyAlgorithm, err := marshalPublicKey(pub)
- if err != nil {
- return nil, err
- }
-
- asn1Issuer, err := subjectBytes(parent)
- if err != nil {
- return
- }
-
- asn1Subject, err := subjectBytes(template)
- if err != nil {
- return
- }
-
- if !bytes.Equal(asn1Issuer, asn1Subject) && len(parent.SubjectKeyId) > 0 {
- template.AuthorityKeyId = parent.SubjectKeyId
- }
-
- extensions, err := buildExtensions(template)
- if err != nil {
- return
- }
- encodedPublicKey := asn1.BitString{BitLength: len(publicKeyBytes) * 8, Bytes: publicKeyBytes}
- c := tbsCertificate{
- Version: 2,
- SerialNumber: template.SerialNumber,
- SignatureAlgorithm: signatureAlgorithm,
- Issuer: asn1.RawValue{FullBytes: asn1Issuer},
- Validity: validity{template.NotBefore.UTC(), template.NotAfter.UTC()},
- Subject: asn1.RawValue{FullBytes: asn1Subject},
- PublicKey: publicKeyInfo{nil, publicKeyAlgorithm, encodedPublicKey},
- Extensions: extensions,
- }
-
- tbsCertContents, err := asn1.Marshal(c)
- if err != nil {
- return
- }
-
- c.Raw = tbsCertContents
-
- h := hashFunc.New()
- h.Write(tbsCertContents)
- digest := h.Sum(nil)
-
- var signerOpts crypto.SignerOpts
- signerOpts = hashFunc
- if template.SignatureAlgorithm != 0 && template.SignatureAlgorithm.isRSAPSS() {
- signerOpts = &rsa.PSSOptions{
- SaltLength: rsa.PSSSaltLengthEqualsHash,
- Hash: crypto.Hash(hashFunc),
- }
- }
-
- var signature []byte
- signature, err = key.Sign(rand, digest, signerOpts)
- if err != nil {
- return
- }
-
- return asn1.Marshal(certificate{
- nil,
- c,
- signatureAlgorithm,
- asn1.BitString{Bytes: signature, BitLength: len(signature) * 8},
- })
-}
-
-// pemCRLPrefix is the magic string that indicates that we have a PEM encoded
-// CRL.
-var pemCRLPrefix = []byte("-----BEGIN X509 CRL")
-
-// pemType is the type of a PEM encoded CRL.
-var pemType = "X509 CRL"
-
-// ParseCRL parses a CRL from the given bytes. It's often the case that PEM
-// encoded CRLs will appear where they should be DER encoded, so this function
-// will transparently handle PEM encoding as long as there isn't any leading
-// garbage.
-func ParseCRL(crlBytes []byte) (*pkix.CertificateList, error) {
- if bytes.HasPrefix(crlBytes, pemCRLPrefix) {
- block, _ := pem.Decode(crlBytes)
- if block != nil && block.Type == pemType {
- crlBytes = block.Bytes
- }
- }
- return ParseDERCRL(crlBytes)
-}
-
-// ParseDERCRL parses a DER encoded CRL from the given bytes.
-func ParseDERCRL(derBytes []byte) (*pkix.CertificateList, error) {
- certList := new(pkix.CertificateList)
- if rest, err := asn1.Unmarshal(derBytes, certList); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after CRL")
- }
- return certList, nil
-}
-
-// CreateCRL returns a DER encoded CRL, signed by this Certificate, that
-// contains the given list of revoked certificates.
-func (c *Certificate) CreateCRL(rand io.Reader, priv interface{}, revokedCerts []pkix.RevokedCertificate, now, expiry time.Time) (crlBytes []byte, err error) {
- key, ok := priv.(crypto.Signer)
- if !ok {
- return nil, errors.New("x509: certificate private key does not implement crypto.Signer")
- }
-
- hashFunc, signatureAlgorithm, err := signingParamsForPublicKey(key.Public(), 0)
- if err != nil {
- return nil, err
- }
-
- // Force revocation times to UTC per RFC 5280.
- revokedCertsUTC := make([]pkix.RevokedCertificate, len(revokedCerts))
- for i, rc := range revokedCerts {
- rc.RevocationTime = rc.RevocationTime.UTC()
- revokedCertsUTC[i] = rc
- }
-
- tbsCertList := pkix.TBSCertificateList{
- Version: 1,
- Signature: signatureAlgorithm,
- Issuer: c.Subject.ToRDNSequence(),
- ThisUpdate: now.UTC(),
- NextUpdate: expiry.UTC(),
- RevokedCertificates: revokedCertsUTC,
- }
-
- // Authority Key Id
- if len(c.SubjectKeyId) > 0 {
- var aki pkix.Extension
- aki.Id = oidExtensionAuthorityKeyId
- aki.Value, err = asn1.Marshal(authKeyId{Id: c.SubjectKeyId})
- if err != nil {
- return
- }
- tbsCertList.Extensions = append(tbsCertList.Extensions, aki)
- }
-
- tbsCertListContents, err := asn1.Marshal(tbsCertList)
- if err != nil {
- return
- }
-
- h := hashFunc.New()
- h.Write(tbsCertListContents)
- digest := h.Sum(nil)
-
- var signature []byte
- signature, err = key.Sign(rand, digest, hashFunc)
- if err != nil {
- return
- }
-
- return asn1.Marshal(pkix.CertificateList{
- TBSCertList: tbsCertList,
- SignatureAlgorithm: signatureAlgorithm,
- SignatureValue: asn1.BitString{Bytes: signature, BitLength: len(signature) * 8},
- })
-}
-
-// CertificateRequest represents a PKCS #10, certificate signature request.
-type CertificateRequest struct {
- Raw []byte // Complete ASN.1 DER content (CSR, signature algorithm and signature).
- RawTBSCertificateRequest []byte // Certificate request info part of raw ASN.1 DER content.
- RawSubjectPublicKeyInfo []byte // DER encoded SubjectPublicKeyInfo.
- RawSubject []byte // DER encoded Subject.
-
- Version int
- Signature []byte
- SignatureAlgorithm SignatureAlgorithm
-
- PublicKeyAlgorithm PublicKeyAlgorithm
- PublicKey interface{}
-
- Subject pkix.Name
-
- // Attributes is the dried husk of a bug and shouldn't be used.
- Attributes []pkix.AttributeTypeAndValueSET
-
- // Extensions contains raw X.509 extensions. When parsing CSRs, this
- // can be used to extract extensions that are not parsed by this
- // package.
- Extensions []pkix.Extension
-
- // ExtraExtensions contains extensions to be copied, raw, into any
- // marshaled CSR. Values override any extensions that would otherwise
- // be produced based on the other fields but are overridden by any
- // extensions specified in Attributes.
- //
- // The ExtraExtensions field is not populated when parsing CSRs, see
- // Extensions.
- ExtraExtensions []pkix.Extension
-
- // Subject Alternate Name values.
- DNSNames []string
- EmailAddresses []string
- IPAddresses []net.IP
-}
-
-// These structures reflect the ASN.1 structure of X.509 certificate
-// signature requests (see RFC 2986):
-
-type tbsCertificateRequest struct {
- Raw asn1.RawContent
- Version int
- Subject asn1.RawValue
- PublicKey publicKeyInfo
- RawAttributes []asn1.RawValue `asn1:"tag:0"`
-}
-
-type certificateRequest struct {
- Raw asn1.RawContent
- TBSCSR tbsCertificateRequest
- SignatureAlgorithm pkix.AlgorithmIdentifier
- SignatureValue asn1.BitString
-}
-
-// oidExtensionRequest is a PKCS#9 OBJECT IDENTIFIER that indicates requested
-// extensions in a CSR.
-var oidExtensionRequest = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 14}
-
-// newRawAttributes converts AttributeTypeAndValueSETs from a template
-// CertificateRequest's Attributes into tbsCertificateRequest RawAttributes.
-func newRawAttributes(attributes []pkix.AttributeTypeAndValueSET) ([]asn1.RawValue, error) {
- var rawAttributes []asn1.RawValue
- b, err := asn1.Marshal(attributes)
- if err != nil {
- return nil, err
- }
- rest, err := asn1.Unmarshal(b, &rawAttributes)
- if err != nil {
- return nil, err
- }
- if len(rest) != 0 {
- return nil, errors.New("x509: failed to unmarshal raw CSR Attributes")
- }
- return rawAttributes, nil
-}
-
-// parseRawAttributes Unmarshals RawAttributes intos AttributeTypeAndValueSETs.
-func parseRawAttributes(rawAttributes []asn1.RawValue) []pkix.AttributeTypeAndValueSET {
- var attributes []pkix.AttributeTypeAndValueSET
- for _, rawAttr := range rawAttributes {
- var attr pkix.AttributeTypeAndValueSET
- rest, err := asn1.Unmarshal(rawAttr.FullBytes, &attr)
- // Ignore attributes that don't parse into pkix.AttributeTypeAndValueSET
- // (i.e.: challengePassword or unstructuredName).
- if err == nil && len(rest) == 0 {
- attributes = append(attributes, attr)
- }
- }
- return attributes
-}
-
-// parseCSRExtensions parses the attributes from a CSR and extracts any
-// requested extensions.
-func parseCSRExtensions(rawAttributes []asn1.RawValue) ([]pkix.Extension, error) {
- // pkcs10Attribute reflects the Attribute structure from section 4.1 of
- // https://tools.ietf.org/html/rfc2986.
- type pkcs10Attribute struct {
- Id asn1.ObjectIdentifier
- Values []asn1.RawValue `asn1:"set"`
- }
-
- var ret []pkix.Extension
- for _, rawAttr := range rawAttributes {
- var attr pkcs10Attribute
- if rest, err := asn1.Unmarshal(rawAttr.FullBytes, &attr); err != nil || len(rest) != 0 || len(attr.Values) == 0 {
- // Ignore attributes that don't parse.
- continue
- }
-
- if !attr.Id.Equal(oidExtensionRequest) {
- continue
- }
-
- var extensions []pkix.Extension
- if _, err := asn1.Unmarshal(attr.Values[0].FullBytes, &extensions); err != nil {
- return nil, err
- }
- ret = append(ret, extensions...)
- }
-
- return ret, nil
-}
-
-// CreateCertificateRequest creates a new certificate request based on a template.
-// The following members of template are used: Subject, Attributes,
-// SignatureAlgorithm, Extensions, DNSNames, EmailAddresses, and IPAddresses.
-// The private key is the private key of the signer.
-//
-// The returned slice is the certificate request in DER encoding.
-//
-// All keys types that are implemented via crypto.Signer are supported (This
-// includes *rsa.PublicKey and *ecdsa.PublicKey.)
-func CreateCertificateRequest(rand io.Reader, template *CertificateRequest, priv interface{}) (csr []byte, err error) {
- key, ok := priv.(crypto.Signer)
- if !ok {
- return nil, errors.New("x509: certificate private key does not implement crypto.Signer")
- }
-
- var hashFunc Hash
- var sigAlgo pkix.AlgorithmIdentifier
- hashFunc, sigAlgo, err = signingParamsForPublicKey(key.Public(), template.SignatureAlgorithm)
- if err != nil {
- return nil, err
- }
-
- var publicKeyBytes []byte
- var publicKeyAlgorithm pkix.AlgorithmIdentifier
- publicKeyBytes, publicKeyAlgorithm, err = marshalPublicKey(key.Public())
- if err != nil {
- return nil, err
- }
-
- var extensions []pkix.Extension
-
- if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0) &&
- !oidInExtensions(oidExtensionSubjectAltName, template.ExtraExtensions) {
- sanBytes, err := marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses)
- if err != nil {
- return nil, err
- }
-
- extensions = append(extensions, pkix.Extension{
- Id: oidExtensionSubjectAltName,
- Value: sanBytes,
- })
- }
-
- extensions = append(extensions, template.ExtraExtensions...)
-
- var attributes []pkix.AttributeTypeAndValueSET
- attributes = append(attributes, template.Attributes...)
-
- if len(extensions) > 0 {
- // specifiedExtensions contains all the extensions that we
- // found specified via template.Attributes.
- specifiedExtensions := make(map[string]bool)
-
- for _, atvSet := range template.Attributes {
- if !atvSet.Type.Equal(oidExtensionRequest) {
- continue
- }
-
- for _, atvs := range atvSet.Value {
- for _, atv := range atvs {
- specifiedExtensions[atv.Type.String()] = true
- }
- }
- }
-
- atvs := make([]pkix.AttributeTypeAndValue, 0, len(extensions))
- for _, e := range extensions {
- if specifiedExtensions[e.Id.String()] {
- // Attributes already contained a value for
- // this extension and it takes priority.
- continue
- }
-
- atvs = append(atvs, pkix.AttributeTypeAndValue{
- // There is no place for the critical flag in a CSR.
- Type: e.Id,
- Value: e.Value,
- })
- }
-
- // Append the extensions to an existing attribute if possible.
- appended := false
- for _, atvSet := range attributes {
- if !atvSet.Type.Equal(oidExtensionRequest) || len(atvSet.Value) == 0 {
- continue
- }
-
- atvSet.Value[0] = append(atvSet.Value[0], atvs...)
- appended = true
- break
- }
-
- // Otherwise, add a new attribute for the extensions.
- if !appended {
- attributes = append(attributes, pkix.AttributeTypeAndValueSET{
- Type: oidExtensionRequest,
- Value: [][]pkix.AttributeTypeAndValue{
- atvs,
- },
- })
- }
- }
-
- asn1Subject := template.RawSubject
- if len(asn1Subject) == 0 {
- asn1Subject, err = asn1.Marshal(template.Subject.ToRDNSequence())
- if err != nil {
- return
- }
- }
-
- rawAttributes, err := newRawAttributes(attributes)
- if err != nil {
- return
- }
-
- tbsCSR := tbsCertificateRequest{
- Version: 0, // PKCS #10, RFC 2986
- Subject: asn1.RawValue{FullBytes: asn1Subject},
- PublicKey: publicKeyInfo{
- Algorithm: publicKeyAlgorithm,
- PublicKey: asn1.BitString{
- Bytes: publicKeyBytes,
- BitLength: len(publicKeyBytes) * 8,
- },
- },
- RawAttributes: rawAttributes,
- }
-
- tbsCSRContents, err := asn1.Marshal(tbsCSR)
- if err != nil {
- return
- }
- tbsCSR.Raw = tbsCSRContents
-
- h := hashFunc.New()
- h.Write(tbsCSRContents)
- digest := h.Sum(nil)
-
- var signature []byte
- signature, err = key.Sign(rand, digest, hashFunc)
- if err != nil {
- return
- }
-
- return asn1.Marshal(certificateRequest{
- TBSCSR: tbsCSR,
- SignatureAlgorithm: sigAlgo,
- SignatureValue: asn1.BitString{
- Bytes: signature,
- BitLength: len(signature) * 8,
- },
- })
-}
-
-// ParseCertificateRequest parses a single certificate request from the
-// given ASN.1 DER data.
-func ParseCertificateRequest(asn1Data []byte) (*CertificateRequest, error) {
- var csr certificateRequest
-
- rest, err := asn1.Unmarshal(asn1Data, &csr)
- if err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, asn1.SyntaxError{Msg: "trailing data"}
- }
-
- return parseCertificateRequest(&csr)
-}
-
-func parseCertificateRequest(in *certificateRequest) (*CertificateRequest, error) {
- out := &CertificateRequest{
- Raw: in.Raw,
- RawTBSCertificateRequest: in.TBSCSR.Raw,
- RawSubjectPublicKeyInfo: in.TBSCSR.PublicKey.Raw,
- RawSubject: in.TBSCSR.Subject.FullBytes,
-
- Signature: in.SignatureValue.RightAlign(),
- SignatureAlgorithm: getSignatureAlgorithmFromAI(in.SignatureAlgorithm),
-
- PublicKeyAlgorithm: getPublicKeyAlgorithmFromOID(in.TBSCSR.PublicKey.Algorithm.Algorithm),
-
- Version: in.TBSCSR.Version,
- Attributes: parseRawAttributes(in.TBSCSR.RawAttributes),
- }
-
- var err error
- out.PublicKey, err = parsePublicKey(out.PublicKeyAlgorithm, &in.TBSCSR.PublicKey)
- if err != nil {
- return nil, err
- }
-
- var subject pkix.RDNSequence
- if rest, err := asn1.Unmarshal(in.TBSCSR.Subject.FullBytes, &subject); err != nil {
- return nil, err
- } else if len(rest) != 0 {
- return nil, errors.New("x509: trailing data after X.509 Subject")
- }
-
- out.Subject.FillFromRDNSequence(&subject)
-
- if out.Extensions, err = parseCSRExtensions(in.TBSCSR.RawAttributes); err != nil {
- return nil, err
- }
-
- for _, extension := range out.Extensions {
- if extension.Id.Equal(oidExtensionSubjectAltName) {
- out.DNSNames, out.EmailAddresses, out.IPAddresses, err = parseSANExtension(extension.Value)
- if err != nil {
- return nil, err
- }
- }
- }
-
- return out, nil
-}
-
-// CheckSignature reports whether the signature on c is valid.
-func (c *CertificateRequest) CheckSignature() error {
- return checkSignature(c.SignatureAlgorithm, c.RawTBSCertificateRequest, c.Signature, c.PublicKey)
-}
-
-func ReadCertificateRequestFromMem(data []byte) (*CertificateRequest, error) {
- block, _ := pem.Decode(data)
- if block == nil {
- return nil, errors.New("failed to decode certificate request")
- }
- return ParseCertificateRequest(block.Bytes)
-}
-
-func ReadCertificateRequestFromPem(FileName string) (*CertificateRequest, error) {
- data, err := ioutil.ReadFile(FileName)
- if err != nil {
- return nil, err
- }
- return ReadCertificateRequestFromMem(data)
-}
-
-func CreateCertificateRequestToMem(template *CertificateRequest, privKey *PrivateKey) ([]byte, error) {
- der, err := CreateCertificateRequest(rand.Reader, template, privKey)
- if err != nil {
- return nil, err
- }
- block := &pem.Block{
- Type: "CERTIFICATE REQUEST",
- Bytes: der,
- }
- return pem.EncodeToMemory(block), nil
-}
-
-func CreateCertificateRequestToPem(FileName string, template *CertificateRequest,
- privKey *PrivateKey) (bool, error) {
- der, err := CreateCertificateRequest(rand.Reader, template, privKey)
- if err != nil {
- return false, err
- }
- block := &pem.Block{
- Type: "CERTIFICATE REQUEST",
- Bytes: der,
- }
- file, err := os.Create(FileName)
- if err != nil {
- return false, err
- }
- defer file.Close()
- err = pem.Encode(file, block)
- if err != nil {
- return false, err
- }
- return true, nil
-}
-
-func ReadCertificateFromMem(data []byte) (*Certificate, error) {
- block, _ := pem.Decode(data)
- if block == nil {
- return nil, errors.New("failed to decode certificate request")
- }
- return ParseCertificate(block.Bytes)
-}
-
-func ReadCertificateFromPem(FileName string) (*Certificate, error) {
- data, err := ioutil.ReadFile(FileName)
- if err != nil {
- return nil, err
- }
- return ReadCertificateFromMem(data)
-}
-
-func CreateCertificateToMem(template, parent *Certificate, pubKey *PublicKey, privKey *PrivateKey) ([]byte, error) {
- der, err := CreateCertificate(rand.Reader, template, parent, pubKey, privKey)
- if err != nil {
- return nil, err
- }
- block := &pem.Block{
- Type: "CERTIFICATE",
- Bytes: der,
- }
- return pem.EncodeToMemory(block), nil
-}
-
-func CreateCertificateToPem(FileName string, template, parent *Certificate, pubKey *PublicKey, privKey *PrivateKey) (bool, error) {
- der, err := CreateCertificate(rand.Reader, template, parent, pubKey, privKey)
- if err != nil {
- return false, err
- }
- block := &pem.Block{
- Type: "CERTIFICATE",
- Bytes: der,
- }
- file, err := os.Create(FileName)
- if err != nil {
- return false, err
- }
- defer file.Close()
- err = pem.Encode(file, block)
- if err != nil {
- return false, err
- }
- return true, nil
-}
+++ /dev/null
-Copyright (c) 2012 The Go Authors. All rights reserved.
-
-Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions are
-met:
-
- * Redistributions of source code must retain the above copyright
-notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above
-copyright notice, this list of conditions and the following disclaimer
-in the documentation and/or other materials provided with the
-distribution.
- * Neither the name of Google Inc. nor the names of its
-contributors may be used to endorse or promote products derived from
-this software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+++ /dev/null
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package ed25519 implements the Ed25519 signature algorithm. See
-// http://ed25519.cr.yp.to/.
-package ed25519
-
-// This code is a port of the public domain, "ref10" implementation of ed25519
-// from SUPERCOP.
-
-import (
- "crypto/sha512"
- "crypto/subtle"
-
- "github.com/tendermint/ed25519/edwards25519"
-)
-
-const (
- PublicKeySize = 32
- PrivateKeySize = 64
- SignatureSize = 64
-)
-
-// MakePublicKey makes a publicKey from the first half of privateKey.
-func MakePublicKey(privateKey *[PrivateKeySize]byte) (publicKey *[PublicKeySize]byte) {
- publicKey = new([32]byte)
-
- h := sha512.New()
- h.Write(privateKey[:32])
- digest := h.Sum(nil)
-
- digest[0] &= 248
- digest[31] &= 127
- digest[31] |= 64
-
- var A edwards25519.ExtendedGroupElement
- var hBytes [32]byte
- copy(hBytes[:], digest)
- edwards25519.GeScalarMultBase(&A, &hBytes)
- A.ToBytes(publicKey)
-
- copy(privateKey[32:], publicKey[:])
- return
-}
-
-// Sign signs the message with privateKey and returns a signature.
-func Sign(privateKey *[PrivateKeySize]byte, message []byte) *[SignatureSize]byte {
- h := sha512.New()
- h.Write(privateKey[:32])
-
- var digest1, messageDigest, hramDigest [64]byte
- var expandedSecretKey [32]byte
- h.Sum(digest1[:0])
- copy(expandedSecretKey[:], digest1[:])
- expandedSecretKey[0] &= 248
- expandedSecretKey[31] &= 63
- expandedSecretKey[31] |= 64
-
- h.Reset()
- h.Write(digest1[32:])
- h.Write(message)
- h.Sum(messageDigest[:0])
-
- var messageDigestReduced [32]byte
- edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
- var R edwards25519.ExtendedGroupElement
- edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
-
- var encodedR [32]byte
- R.ToBytes(&encodedR)
-
- h.Reset()
- h.Write(encodedR[:])
- h.Write(privateKey[32:])
- h.Write(message)
- h.Sum(hramDigest[:0])
- var hramDigestReduced [32]byte
- edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
-
- var s [32]byte
- edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
-
- signature := new([64]byte)
- copy(signature[:], encodedR[:])
- copy(signature[32:], s[:])
- return signature
-}
-
-// Verify returns true iff sig is a valid signature of message by publicKey.
-func Verify(publicKey *[PublicKeySize]byte, message []byte, sig *[SignatureSize]byte) bool {
- if sig[63]&224 != 0 {
- return false
- }
-
- var A edwards25519.ExtendedGroupElement
- if !A.FromBytes(publicKey) {
- return false
- }
- edwards25519.FeNeg(&A.X, &A.X)
- edwards25519.FeNeg(&A.T, &A.T)
-
- h := sha512.New()
- h.Write(sig[:32])
- h.Write(publicKey[:])
- h.Write(message)
- var digest [64]byte
- h.Sum(digest[:0])
-
- var hReduced [32]byte
- edwards25519.ScReduce(&hReduced, &digest)
-
- var R edwards25519.ProjectiveGroupElement
- var b [32]byte
- copy(b[:], sig[32:])
- edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &b)
-
- var checkR [32]byte
- R.ToBytes(&checkR)
- return subtle.ConstantTimeCompare(sig[:32], checkR[:]) == 1
-}
+++ /dev/null
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package edwards25519
-
-var d = FieldElement{
- -10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116,
-}
-
-var d2 = FieldElement{
- -21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199,
-}
-
-var SqrtM1 = FieldElement{
- -32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482,
-}
-
-var A = FieldElement{
- 486662, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-}
-
-var bi = [8]PreComputedGroupElement{
- {
- FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
- FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
- FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
- },
- {
- FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
- FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
- FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
- },
- {
- FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
- FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
- FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
- },
- {
- FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
- FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
- FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
- },
- {
- FieldElement{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877},
- FieldElement{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951},
- FieldElement{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784},
- },
- {
- FieldElement{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436},
- FieldElement{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918},
- FieldElement{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877},
- },
- {
- FieldElement{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800},
- FieldElement{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305},
- FieldElement{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300},
- },
- {
- FieldElement{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876},
- FieldElement{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619},
- FieldElement{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683},
- },
-}
-
-var base = [32][8]PreComputedGroupElement{
- {
- {
- FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
- FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
- FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
- },
- {
- FieldElement{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303},
- FieldElement{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081},
- FieldElement{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697},
- },
- {
- FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
- FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
- FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
- },
- {
- FieldElement{-17036878, 13921892, 10945806, -6033431, 27105052, -16084379, -28926210, 15006023, 3284568, -6276540},
- FieldElement{23599295, -8306047, -11193664, -7687416, 13236774, 10506355, 7464579, 9656445, 13059162, 10374397},
- FieldElement{7798556, 16710257, 3033922, 2874086, 28997861, 2835604, 32406664, -3839045, -641708, -101325},
- },
- {
- FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
- FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
- FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
- },
- {
- FieldElement{-15371964, -12862754, 32573250, 4720197, -26436522, 5875511, -19188627, -15224819, -9818940, -12085777},
- FieldElement{-8549212, 109983, 15149363, 2178705, 22900618, 4543417, 3044240, -15689887, 1762328, 14866737},
- FieldElement{-18199695, -15951423, -10473290, 1707278, -17185920, 3916101, -28236412, 3959421, 27914454, 4383652},
- },
- {
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- FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
- },
- {
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- FieldElement{27431194, 8222322, 16448760, -3907995, -18707002, 11938355, -32961401, -2970515, 29551813, 10109425},
- },
- },
- {
- {
- FieldElement{-13657040, -13155431, -31283750, 11777098, 21447386, 6519384, -2378284, -1627556, 10092783, -4764171},
- FieldElement{27939166, 14210322, 4677035, 16277044, -22964462, -12398139, -32508754, 12005538, -17810127, 12803510},
- FieldElement{17228999, -15661624, -1233527, 300140, -1224870, -11714777, 30364213, -9038194, 18016357, 4397660},
- },
- {
- FieldElement{-10958843, -7690207, 4776341, -14954238, 27850028, -15602212, -26619106, 14544525, -17477504, 982639},
- FieldElement{29253598, 15796703, -2863982, -9908884, 10057023, 3163536, 7332899, -4120128, -21047696, 9934963},
- FieldElement{5793303, 16271923, -24131614, -10116404, 29188560, 1206517, -14747930, 4559895, -30123922, -10897950},
- },
- {
- FieldElement{-27643952, -11493006, 16282657, -11036493, 28414021, -15012264, 24191034, 4541697, -13338309, 5500568},
- FieldElement{12650548, -1497113, 9052871, 11355358, -17680037, -8400164, -17430592, 12264343, 10874051, 13524335},
- FieldElement{25556948, -3045990, 714651, 2510400, 23394682, -10415330, 33119038, 5080568, -22528059, 5376628},
- },
- {
- FieldElement{-26088264, -4011052, -17013699, -3537628, -6726793, 1920897, -22321305, -9447443, 4535768, 1569007},
- FieldElement{-2255422, 14606630, -21692440, -8039818, 28430649, 8775819, -30494562, 3044290, 31848280, 12543772},
- FieldElement{-22028579, 2943893, -31857513, 6777306, 13784462, -4292203, -27377195, -2062731, 7718482, 14474653},
- },
- {
- FieldElement{2385315, 2454213, -22631320, 46603, -4437935, -15680415, 656965, -7236665, 24316168, -5253567},
- FieldElement{13741529, 10911568, -33233417, -8603737, -20177830, -1033297, 33040651, -13424532, -20729456, 8321686},
- FieldElement{21060490, -2212744, 15712757, -4336099, 1639040, 10656336, 23845965, -11874838, -9984458, 608372},
- },
- {
- FieldElement{-13672732, -15087586, -10889693, -7557059, -6036909, 11305547, 1123968, -6780577, 27229399, 23887},
- FieldElement{-23244140, -294205, -11744728, 14712571, -29465699, -2029617, 12797024, -6440308, -1633405, 16678954},
- FieldElement{-29500620, 4770662, -16054387, 14001338, 7830047, 9564805, -1508144, -4795045, -17169265, 4904953},
- },
- {
- FieldElement{24059557, 14617003, 19037157, -15039908, 19766093, -14906429, 5169211, 16191880, 2128236, -4326833},
- FieldElement{-16981152, 4124966, -8540610, -10653797, 30336522, -14105247, -29806336, 916033, -6882542, -2986532},
- FieldElement{-22630907, 12419372, -7134229, -7473371, -16478904, 16739175, 285431, 2763829, 15736322, 4143876},
- },
- {
- FieldElement{2379352, 11839345, -4110402, -5988665, 11274298, 794957, 212801, -14594663, 23527084, -16458268},
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- FieldElement{1767683, 7197987, -13205226, -2022635, -13091350, 448826, 5799055, 4357868, -4774191, -16323038},
- },
- },
- {
- {
- FieldElement{6721966, 13833823, -23523388, -1551314, 26354293, -11863321, 23365147, -3949732, 7390890, 2759800},
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- FieldElement{-4421239, 7169619, 4982368, -2957590, 30256825, -2777540, 14086413, 9208236, 15886429, 16489664},
- },
- {
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- FieldElement{-17770784, 11797796, 31950843, 13929123, -25888302, 12288344, -30341101, -7336386, 13847711, 5387222},
- },
- {
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- {
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- {
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- {
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- {
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- },
- },
- {
- {
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- {
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- {
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- },
- {
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- {
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- },
- {
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- {
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- {
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- FieldElement{-21699244, 9220969, -15730624, 1084137, -25476107, -2852390, 31088447, -7764523, -11356529, 728112},
- },
- {
- FieldElement{26047220, -11751471, -6900323, -16521798, 24092068, 9158119, -4273545, -12555558, -29365436, -5498272},
- FieldElement{17510331, -322857, 5854289, 8403524, 17133918, -3112612, -28111007, 12327945, 10750447, 10014012},
- FieldElement{-10312768, 3936952, 9156313, -8897683, 16498692, -994647, -27481051, -666732, 3424691, 7540221},
- },
- {
- FieldElement{30322361, -6964110, 11361005, -4143317, 7433304, 4989748, -7071422, -16317219, -9244265, 15258046},
- FieldElement{13054562, -2779497, 19155474, 469045, -12482797, 4566042, 5631406, 2711395, 1062915, -5136345},
- FieldElement{-19240248, -11254599, -29509029, -7499965, -5835763, 13005411, -6066489, 12194497, 32960380, 1459310},
- },
- },
- {
- {
- FieldElement{19852034, 7027924, 23669353, 10020366, 8586503, -6657907, 394197, -6101885, 18638003, -11174937},
- FieldElement{31395534, 15098109, 26581030, 8030562, -16527914, -5007134, 9012486, -7584354, -6643087, -5442636},
- FieldElement{-9192165, -2347377, -1997099, 4529534, 25766844, 607986, -13222, 9677543, -32294889, -6456008},
- },
- {
- FieldElement{-2444496, -149937, 29348902, 8186665, 1873760, 12489863, -30934579, -7839692, -7852844, -8138429},
- FieldElement{-15236356, -15433509, 7766470, 746860, 26346930, -10221762, -27333451, 10754588, -9431476, 5203576},
- FieldElement{31834314, 14135496, -770007, 5159118, 20917671, -16768096, -7467973, -7337524, 31809243, 7347066},
- },
- {
- FieldElement{-9606723, -11874240, 20414459, 13033986, 13716524, -11691881, 19797970, -12211255, 15192876, -2087490},
- FieldElement{-12663563, -2181719, 1168162, -3804809, 26747877, -14138091, 10609330, 12694420, 33473243, -13382104},
- FieldElement{33184999, 11180355, 15832085, -11385430, -1633671, 225884, 15089336, -11023903, -6135662, 14480053},
- },
- {
- FieldElement{31308717, -5619998, 31030840, -1897099, 15674547, -6582883, 5496208, 13685227, 27595050, 8737275},
- FieldElement{-20318852, -15150239, 10933843, -16178022, 8335352, -7546022, -31008351, -12610604, 26498114, 66511},
- FieldElement{22644454, -8761729, -16671776, 4884562, -3105614, -13559366, 30540766, -4286747, -13327787, -7515095},
- },
- {
- FieldElement{-28017847, 9834845, 18617207, -2681312, -3401956, -13307506, 8205540, 13585437, -17127465, 15115439},
- FieldElement{23711543, -672915, 31206561, -8362711, 6164647, -9709987, -33535882, -1426096, 8236921, 16492939},
- FieldElement{-23910559, -13515526, -26299483, -4503841, 25005590, -7687270, 19574902, 10071562, 6708380, -6222424},
- },
- {
- FieldElement{2101391, -4930054, 19702731, 2367575, -15427167, 1047675, 5301017, 9328700, 29955601, -11678310},
- FieldElement{3096359, 9271816, -21620864, -15521844, -14847996, -7592937, -25892142, -12635595, -9917575, 6216608},
- FieldElement{-32615849, 338663, -25195611, 2510422, -29213566, -13820213, 24822830, -6146567, -26767480, 7525079},
- },
- {
- FieldElement{-23066649, -13985623, 16133487, -7896178, -3389565, 778788, -910336, -2782495, -19386633, 11994101},
- FieldElement{21691500, -13624626, -641331, -14367021, 3285881, -3483596, -25064666, 9718258, -7477437, 13381418},
- FieldElement{18445390, -4202236, 14979846, 11622458, -1727110, -3582980, 23111648, -6375247, 28535282, 15779576},
- },
- {
- FieldElement{30098053, 3089662, -9234387, 16662135, -21306940, 11308411, -14068454, 12021730, 9955285, -16303356},
- FieldElement{9734894, -14576830, -7473633, -9138735, 2060392, 11313496, -18426029, 9924399, 20194861, 13380996},
- FieldElement{-26378102, -7965207, -22167821, 15789297, -18055342, -6168792, -1984914, 15707771, 26342023, 10146099},
- },
- },
- {
- {
- FieldElement{-26016874, -219943, 21339191, -41388, 19745256, -2878700, -29637280, 2227040, 21612326, -545728},
- FieldElement{-13077387, 1184228, 23562814, -5970442, -20351244, -6348714, 25764461, 12243797, -20856566, 11649658},
- FieldElement{-10031494, 11262626, 27384172, 2271902, 26947504, -15997771, 39944, 6114064, 33514190, 2333242},
- },
- {
- FieldElement{-21433588, -12421821, 8119782, 7219913, -21830522, -9016134, -6679750, -12670638, 24350578, -13450001},
- FieldElement{-4116307, -11271533, -23886186, 4843615, -30088339, 690623, -31536088, -10406836, 8317860, 12352766},
- FieldElement{18200138, -14475911, -33087759, -2696619, -23702521, -9102511, -23552096, -2287550, 20712163, 6719373},
- },
- {
- FieldElement{26656208, 6075253, -7858556, 1886072, -28344043, 4262326, 11117530, -3763210, 26224235, -3297458},
- FieldElement{-17168938, -14854097, -3395676, -16369877, -19954045, 14050420, 21728352, 9493610, 18620611, -16428628},
- FieldElement{-13323321, 13325349, 11432106, 5964811, 18609221, 6062965, -5269471, -9725556, -30701573, -16479657},
- },
- {
- FieldElement{-23860538, -11233159, 26961357, 1640861, -32413112, -16737940, 12248509, -5240639, 13735342, 1934062},
- FieldElement{25089769, 6742589, 17081145, -13406266, 21909293, -16067981, -15136294, -3765346, -21277997, 5473616},
- FieldElement{31883677, -7961101, 1083432, -11572403, 22828471, 13290673, -7125085, 12469656, 29111212, -5451014},
- },
- {
- FieldElement{24244947, -15050407, -26262976, 2791540, -14997599, 16666678, 24367466, 6388839, -10295587, 452383},
- FieldElement{-25640782, -3417841, 5217916, 16224624, 19987036, -4082269, -24236251, -5915248, 15766062, 8407814},
- FieldElement{-20406999, 13990231, 15495425, 16395525, 5377168, 15166495, -8917023, -4388953, -8067909, 2276718},
- },
- {
- FieldElement{30157918, 12924066, -17712050, 9245753, 19895028, 3368142, -23827587, 5096219, 22740376, -7303417},
- FieldElement{2041139, -14256350, 7783687, 13876377, -25946985, -13352459, 24051124, 13742383, -15637599, 13295222},
- FieldElement{33338237, -8505733, 12532113, 7977527, 9106186, -1715251, -17720195, -4612972, -4451357, -14669444},
- },
- {
- FieldElement{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597},
- FieldElement{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970},
- FieldElement{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799},
- },
- {
- FieldElement{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647},
- FieldElement{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511},
- FieldElement{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032},
- },
- },
- {
- {
- FieldElement{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834},
- FieldElement{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461},
- FieldElement{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062},
- },
- {
- FieldElement{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516},
- FieldElement{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547},
- FieldElement{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240},
- },
- {
- FieldElement{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038},
- FieldElement{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741},
- FieldElement{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103},
- },
- {
- FieldElement{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747},
- FieldElement{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323},
- FieldElement{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016},
- },
- {
- FieldElement{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373},
- FieldElement{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228},
- FieldElement{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141},
- },
- {
- FieldElement{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399},
- FieldElement{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831},
- FieldElement{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376},
- },
- {
- FieldElement{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313},
- FieldElement{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958},
- FieldElement{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577},
- },
- {
- FieldElement{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743},
- FieldElement{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684},
- FieldElement{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476},
- },
- },
-}
+++ /dev/null
-// Copyright 2013 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package edwards25519 implements operations in GF(2**255-19) and on an
-// Edwards curve that is isomorphic to curve25519. See
-// http://ed25519.cr.yp.to/.
-package edwards25519
-
-// This code is a port of the public domain, "ref10" implementation of ed25519
-// from SUPERCOP.
-
-// FieldElement represents an element of the field GF(2^255 - 19). An element
-// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
-// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on
-// context.
-type FieldElement [10]int32
-
-var zero FieldElement
-
-func FeZero(fe *FieldElement) {
- copy(fe[:], zero[:])
-}
-
-func FeOne(fe *FieldElement) {
- FeZero(fe)
- fe[0] = 1
-}
-
-func FeAdd(dst, a, b *FieldElement) {
- dst[0] = a[0] + b[0]
- dst[1] = a[1] + b[1]
- dst[2] = a[2] + b[2]
- dst[3] = a[3] + b[3]
- dst[4] = a[4] + b[4]
- dst[5] = a[5] + b[5]
- dst[6] = a[6] + b[6]
- dst[7] = a[7] + b[7]
- dst[8] = a[8] + b[8]
- dst[9] = a[9] + b[9]
-}
-
-func FeSub(dst, a, b *FieldElement) {
- dst[0] = a[0] - b[0]
- dst[1] = a[1] - b[1]
- dst[2] = a[2] - b[2]
- dst[3] = a[3] - b[3]
- dst[4] = a[4] - b[4]
- dst[5] = a[5] - b[5]
- dst[6] = a[6] - b[6]
- dst[7] = a[7] - b[7]
- dst[8] = a[8] - b[8]
- dst[9] = a[9] - b[9]
-}
-
-func FeCopy(dst, src *FieldElement) {
- copy(dst[:], src[:])
-}
-
-// Replace (f,g) with (g,g) if b == 1;
-// replace (f,g) with (f,g) if b == 0.
-//
-// Preconditions: b in {0,1}.
-func FeCMove(f, g *FieldElement, b int32) {
- b = -b
- f[0] ^= b & (f[0] ^ g[0])
- f[1] ^= b & (f[1] ^ g[1])
- f[2] ^= b & (f[2] ^ g[2])
- f[3] ^= b & (f[3] ^ g[3])
- f[4] ^= b & (f[4] ^ g[4])
- f[5] ^= b & (f[5] ^ g[5])
- f[6] ^= b & (f[6] ^ g[6])
- f[7] ^= b & (f[7] ^ g[7])
- f[8] ^= b & (f[8] ^ g[8])
- f[9] ^= b & (f[9] ^ g[9])
-}
-
-func load3(in []byte) int64 {
- var r int64
- r = int64(in[0])
- r |= int64(in[1]) << 8
- r |= int64(in[2]) << 16
- return r
-}
-
-func load4(in []byte) int64 {
- var r int64
- r = int64(in[0])
- r |= int64(in[1]) << 8
- r |= int64(in[2]) << 16
- r |= int64(in[3]) << 24
- return r
-}
-
-func FeFromBytes(dst *FieldElement, src *[32]byte) {
- h0 := load4(src[:])
- h1 := load3(src[4:]) << 6
- h2 := load3(src[7:]) << 5
- h3 := load3(src[10:]) << 3
- h4 := load3(src[13:]) << 2
- h5 := load4(src[16:])
- h6 := load3(src[20:]) << 7
- h7 := load3(src[23:]) << 5
- h8 := load3(src[26:]) << 4
- h9 := (load3(src[29:]) & 8388607) << 2
-
- FeCombine(dst, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-// FeToBytes marshals h to s.
-// Preconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Write p=2^255-19; q=floor(h/p).
-// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
-//
-// Proof:
-// Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
-// Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
-//
-// Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
-// Then 0<y<1.
-//
-// Write r=h-pq.
-// Have 0<=r<=p-1=2^255-20.
-// Thus 0<=r+19(2^-255)r<r+19(2^-255)2^255<=2^255-1.
-//
-// Write x=r+19(2^-255)r+y.
-// Then 0<x<2^255 so floor(2^(-255)x) = 0 so floor(q+2^(-255)x) = q.
-//
-// Have q+2^(-255)x = 2^(-255)(h + 19 2^(-25) h9 + 2^(-1))
-// so floor(2^(-255)(h + 19 2^(-25) h9 + 2^(-1))) = q.
-func FeToBytes(s *[32]byte, h *FieldElement) {
- var carry [10]int32
-
- q := (19*h[9] + (1 << 24)) >> 25
- q = (h[0] + q) >> 26
- q = (h[1] + q) >> 25
- q = (h[2] + q) >> 26
- q = (h[3] + q) >> 25
- q = (h[4] + q) >> 26
- q = (h[5] + q) >> 25
- q = (h[6] + q) >> 26
- q = (h[7] + q) >> 25
- q = (h[8] + q) >> 26
- q = (h[9] + q) >> 25
-
- // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
- h[0] += 19 * q
- // Goal: Output h-2^255 q, which is between 0 and 2^255-20.
-
- carry[0] = h[0] >> 26
- h[1] += carry[0]
- h[0] -= carry[0] << 26
- carry[1] = h[1] >> 25
- h[2] += carry[1]
- h[1] -= carry[1] << 25
- carry[2] = h[2] >> 26
- h[3] += carry[2]
- h[2] -= carry[2] << 26
- carry[3] = h[3] >> 25
- h[4] += carry[3]
- h[3] -= carry[3] << 25
- carry[4] = h[4] >> 26
- h[5] += carry[4]
- h[4] -= carry[4] << 26
- carry[5] = h[5] >> 25
- h[6] += carry[5]
- h[5] -= carry[5] << 25
- carry[6] = h[6] >> 26
- h[7] += carry[6]
- h[6] -= carry[6] << 26
- carry[7] = h[7] >> 25
- h[8] += carry[7]
- h[7] -= carry[7] << 25
- carry[8] = h[8] >> 26
- h[9] += carry[8]
- h[8] -= carry[8] << 26
- carry[9] = h[9] >> 25
- h[9] -= carry[9] << 25
- // h10 = carry9
-
- // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
- // Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
- // evidently 2^255 h10-2^255 q = 0.
- // Goal: Output h[0]+...+2^230 h[9].
-
- s[0] = byte(h[0] >> 0)
- s[1] = byte(h[0] >> 8)
- s[2] = byte(h[0] >> 16)
- s[3] = byte((h[0] >> 24) | (h[1] << 2))
- s[4] = byte(h[1] >> 6)
- s[5] = byte(h[1] >> 14)
- s[6] = byte((h[1] >> 22) | (h[2] << 3))
- s[7] = byte(h[2] >> 5)
- s[8] = byte(h[2] >> 13)
- s[9] = byte((h[2] >> 21) | (h[3] << 5))
- s[10] = byte(h[3] >> 3)
- s[11] = byte(h[3] >> 11)
- s[12] = byte((h[3] >> 19) | (h[4] << 6))
- s[13] = byte(h[4] >> 2)
- s[14] = byte(h[4] >> 10)
- s[15] = byte(h[4] >> 18)
- s[16] = byte(h[5] >> 0)
- s[17] = byte(h[5] >> 8)
- s[18] = byte(h[5] >> 16)
- s[19] = byte((h[5] >> 24) | (h[6] << 1))
- s[20] = byte(h[6] >> 7)
- s[21] = byte(h[6] >> 15)
- s[22] = byte((h[6] >> 23) | (h[7] << 3))
- s[23] = byte(h[7] >> 5)
- s[24] = byte(h[7] >> 13)
- s[25] = byte((h[7] >> 21) | (h[8] << 4))
- s[26] = byte(h[8] >> 4)
- s[27] = byte(h[8] >> 12)
- s[28] = byte((h[8] >> 20) | (h[9] << 6))
- s[29] = byte(h[9] >> 2)
- s[30] = byte(h[9] >> 10)
- s[31] = byte(h[9] >> 18)
-}
-
-func FeIsNegative(f *FieldElement) byte {
- var s [32]byte
- FeToBytes(&s, f)
- return s[0] & 1
-}
-
-func FeIsNonZero(f *FieldElement) int32 {
- var s [32]byte
- FeToBytes(&s, f)
- var x uint8
- for _, b := range s {
- x |= b
- }
- x |= x >> 4
- x |= x >> 2
- x |= x >> 1
- return int32(x & 1)
-}
-
-// FeNeg sets h = -f
-//
-// Preconditions:
-// |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Postconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func FeNeg(h, f *FieldElement) {
- h[0] = -f[0]
- h[1] = -f[1]
- h[2] = -f[2]
- h[3] = -f[3]
- h[4] = -f[4]
- h[5] = -f[5]
- h[6] = -f[6]
- h[7] = -f[7]
- h[8] = -f[8]
- h[9] = -f[9]
-}
-
-func FeCombine(h *FieldElement, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
- var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9 int64
-
- /*
- |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
- i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
- |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
- i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
- */
-
- c0 = (h0 + (1 << 25)) >> 26
- h1 += c0
- h0 -= c0 << 26
- c4 = (h4 + (1 << 25)) >> 26
- h5 += c4
- h4 -= c4 << 26
- /* |h0| <= 2^25 */
- /* |h4| <= 2^25 */
- /* |h1| <= 1.51*2^58 */
- /* |h5| <= 1.51*2^58 */
-
- c1 = (h1 + (1 << 24)) >> 25
- h2 += c1
- h1 -= c1 << 25
- c5 = (h5 + (1 << 24)) >> 25
- h6 += c5
- h5 -= c5 << 25
- /* |h1| <= 2^24; from now on fits into int32 */
- /* |h5| <= 2^24; from now on fits into int32 */
- /* |h2| <= 1.21*2^59 */
- /* |h6| <= 1.21*2^59 */
-
- c2 = (h2 + (1 << 25)) >> 26
- h3 += c2
- h2 -= c2 << 26
- c6 = (h6 + (1 << 25)) >> 26
- h7 += c6
- h6 -= c6 << 26
- /* |h2| <= 2^25; from now on fits into int32 unchanged */
- /* |h6| <= 2^25; from now on fits into int32 unchanged */
- /* |h3| <= 1.51*2^58 */
- /* |h7| <= 1.51*2^58 */
-
- c3 = (h3 + (1 << 24)) >> 25
- h4 += c3
- h3 -= c3 << 25
- c7 = (h7 + (1 << 24)) >> 25
- h8 += c7
- h7 -= c7 << 25
- /* |h3| <= 2^24; from now on fits into int32 unchanged */
- /* |h7| <= 2^24; from now on fits into int32 unchanged */
- /* |h4| <= 1.52*2^33 */
- /* |h8| <= 1.52*2^33 */
-
- c4 = (h4 + (1 << 25)) >> 26
- h5 += c4
- h4 -= c4 << 26
- c8 = (h8 + (1 << 25)) >> 26
- h9 += c8
- h8 -= c8 << 26
- /* |h4| <= 2^25; from now on fits into int32 unchanged */
- /* |h8| <= 2^25; from now on fits into int32 unchanged */
- /* |h5| <= 1.01*2^24 */
- /* |h9| <= 1.51*2^58 */
-
- c9 = (h9 + (1 << 24)) >> 25
- h0 += c9 * 19
- h9 -= c9 << 25
- /* |h9| <= 2^24; from now on fits into int32 unchanged */
- /* |h0| <= 1.8*2^37 */
-
- c0 = (h0 + (1 << 25)) >> 26
- h1 += c0
- h0 -= c0 << 26
- /* |h0| <= 2^25; from now on fits into int32 unchanged */
- /* |h1| <= 1.01*2^24 */
-
- h[0] = int32(h0)
- h[1] = int32(h1)
- h[2] = int32(h2)
- h[3] = int32(h3)
- h[4] = int32(h4)
- h[5] = int32(h5)
- h[6] = int32(h6)
- h[7] = int32(h7)
- h[8] = int32(h8)
- h[9] = int32(h9)
-}
-
-// FeMul calculates h = f * g
-// Can overlap h with f or g.
-//
-// Preconditions:
-// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-// |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-//
-// Notes on implementation strategy:
-//
-// Using schoolbook multiplication.
-// Karatsuba would save a little in some cost models.
-//
-// Most multiplications by 2 and 19 are 32-bit precomputations;
-// cheaper than 64-bit postcomputations.
-//
-// There is one remaining multiplication by 19 in the carry chain;
-// one *19 precomputation can be merged into this,
-// but the resulting data flow is considerably less clean.
-//
-// There are 12 carries below.
-// 10 of them are 2-way parallelizable and vectorizable.
-// Can get away with 11 carries, but then data flow is much deeper.
-//
-// With tighter constraints on inputs can squeeze carries into int32.
-func FeMul(h, f, g *FieldElement) {
- f0 := int64(f[0])
- f1 := int64(f[1])
- f2 := int64(f[2])
- f3 := int64(f[3])
- f4 := int64(f[4])
- f5 := int64(f[5])
- f6 := int64(f[6])
- f7 := int64(f[7])
- f8 := int64(f[8])
- f9 := int64(f[9])
-
- f1_2 := int64(2 * f[1])
- f3_2 := int64(2 * f[3])
- f5_2 := int64(2 * f[5])
- f7_2 := int64(2 * f[7])
- f9_2 := int64(2 * f[9])
-
- g0 := int64(g[0])
- g1 := int64(g[1])
- g2 := int64(g[2])
- g3 := int64(g[3])
- g4 := int64(g[4])
- g5 := int64(g[5])
- g6 := int64(g[6])
- g7 := int64(g[7])
- g8 := int64(g[8])
- g9 := int64(g[9])
-
- g1_19 := int64(19 * g[1]) /* 1.4*2^29 */
- g2_19 := int64(19 * g[2]) /* 1.4*2^30; still ok */
- g3_19 := int64(19 * g[3])
- g4_19 := int64(19 * g[4])
- g5_19 := int64(19 * g[5])
- g6_19 := int64(19 * g[6])
- g7_19 := int64(19 * g[7])
- g8_19 := int64(19 * g[8])
- g9_19 := int64(19 * g[9])
-
- h0 := f0*g0 + f1_2*g9_19 + f2*g8_19 + f3_2*g7_19 + f4*g6_19 + f5_2*g5_19 + f6*g4_19 + f7_2*g3_19 + f8*g2_19 + f9_2*g1_19
- h1 := f0*g1 + f1*g0 + f2*g9_19 + f3*g8_19 + f4*g7_19 + f5*g6_19 + f6*g5_19 + f7*g4_19 + f8*g3_19 + f9*g2_19
- h2 := f0*g2 + f1_2*g1 + f2*g0 + f3_2*g9_19 + f4*g8_19 + f5_2*g7_19 + f6*g6_19 + f7_2*g5_19 + f8*g4_19 + f9_2*g3_19
- h3 := f0*g3 + f1*g2 + f2*g1 + f3*g0 + f4*g9_19 + f5*g8_19 + f6*g7_19 + f7*g6_19 + f8*g5_19 + f9*g4_19
- h4 := f0*g4 + f1_2*g3 + f2*g2 + f3_2*g1 + f4*g0 + f5_2*g9_19 + f6*g8_19 + f7_2*g7_19 + f8*g6_19 + f9_2*g5_19
- h5 := f0*g5 + f1*g4 + f2*g3 + f3*g2 + f4*g1 + f5*g0 + f6*g9_19 + f7*g8_19 + f8*g7_19 + f9*g6_19
- h6 := f0*g6 + f1_2*g5 + f2*g4 + f3_2*g3 + f4*g2 + f5_2*g1 + f6*g0 + f7_2*g9_19 + f8*g8_19 + f9_2*g7_19
- h7 := f0*g7 + f1*g6 + f2*g5 + f3*g4 + f4*g3 + f5*g2 + f6*g1 + f7*g0 + f8*g9_19 + f9*g8_19
- h8 := f0*g8 + f1_2*g7 + f2*g6 + f3_2*g5 + f4*g4 + f5_2*g3 + f6*g2 + f7_2*g1 + f8*g0 + f9_2*g9_19
- h9 := f0*g9 + f1*g8 + f2*g7 + f3*g6 + f4*g5 + f5*g4 + f6*g3 + f7*g2 + f8*g1 + f9*g0
-
- FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-func feSquare(f *FieldElement) (h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
- f0 := int64(f[0])
- f1 := int64(f[1])
- f2 := int64(f[2])
- f3 := int64(f[3])
- f4 := int64(f[4])
- f5 := int64(f[5])
- f6 := int64(f[6])
- f7 := int64(f[7])
- f8 := int64(f[8])
- f9 := int64(f[9])
- f0_2 := int64(2 * f[0])
- f1_2 := int64(2 * f[1])
- f2_2 := int64(2 * f[2])
- f3_2 := int64(2 * f[3])
- f4_2 := int64(2 * f[4])
- f5_2 := int64(2 * f[5])
- f6_2 := int64(2 * f[6])
- f7_2 := int64(2 * f[7])
- f5_38 := 38 * f5 // 1.31*2^30
- f6_19 := 19 * f6 // 1.31*2^30
- f7_38 := 38 * f7 // 1.31*2^30
- f8_19 := 19 * f8 // 1.31*2^30
- f9_38 := 38 * f9 // 1.31*2^30
-
- h0 = f0*f0 + f1_2*f9_38 + f2_2*f8_19 + f3_2*f7_38 + f4_2*f6_19 + f5*f5_38
- h1 = f0_2*f1 + f2*f9_38 + f3_2*f8_19 + f4*f7_38 + f5_2*f6_19
- h2 = f0_2*f2 + f1_2*f1 + f3_2*f9_38 + f4_2*f8_19 + f5_2*f7_38 + f6*f6_19
- h3 = f0_2*f3 + f1_2*f2 + f4*f9_38 + f5_2*f8_19 + f6*f7_38
- h4 = f0_2*f4 + f1_2*f3_2 + f2*f2 + f5_2*f9_38 + f6_2*f8_19 + f7*f7_38
- h5 = f0_2*f5 + f1_2*f4 + f2_2*f3 + f6*f9_38 + f7_2*f8_19
- h6 = f0_2*f6 + f1_2*f5_2 + f2_2*f4 + f3_2*f3 + f7_2*f9_38 + f8*f8_19
- h7 = f0_2*f7 + f1_2*f6 + f2_2*f5 + f3_2*f4 + f8*f9_38
- h8 = f0_2*f8 + f1_2*f7_2 + f2_2*f6 + f3_2*f5_2 + f4*f4 + f9*f9_38
- h9 = f0_2*f9 + f1_2*f8 + f2_2*f7 + f3_2*f6 + f4_2*f5
-
- return
-}
-
-// FeSquare calculates h = f*f. Can overlap h with f.
-//
-// Preconditions:
-// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
-//
-// Postconditions:
-// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
-func FeSquare(h, f *FieldElement) {
- h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
- FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-// FeSquare2 sets h = 2 * f * f
-//
-// Can overlap h with f.
-//
-// Preconditions:
-// |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
-//
-// Postconditions:
-// |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
-// See fe_mul.c for discussion of implementation strategy.
-func FeSquare2(h, f *FieldElement) {
- h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
-
- h0 += h0
- h1 += h1
- h2 += h2
- h3 += h3
- h4 += h4
- h5 += h5
- h6 += h6
- h7 += h7
- h8 += h8
- h9 += h9
-
- FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
-}
-
-func FeInvert(out, z *FieldElement) {
- var t0, t1, t2, t3 FieldElement
- var i int
-
- FeSquare(&t0, z) // 2^1
- FeSquare(&t1, &t0) // 2^2
- for i = 1; i < 2; i++ { // 2^3
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, z, &t1) // 2^3 + 2^0
- FeMul(&t0, &t0, &t1) // 2^3 + 2^1 + 2^0
- FeSquare(&t2, &t0) // 2^4 + 2^2 + 2^1
- FeMul(&t1, &t1, &t2) // 2^4 + 2^3 + 2^2 + 2^1 + 2^0
- FeSquare(&t2, &t1) // 5,4,3,2,1
- for i = 1; i < 5; i++ { // 9,8,7,6,5
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1) // 9,8,7,6,5,4,3,2,1,0
- FeSquare(&t2, &t1) // 10..1
- for i = 1; i < 10; i++ { // 19..10
- FeSquare(&t2, &t2)
- }
- FeMul(&t2, &t2, &t1) // 19..0
- FeSquare(&t3, &t2) // 20..1
- for i = 1; i < 20; i++ { // 39..20
- FeSquare(&t3, &t3)
- }
- FeMul(&t2, &t3, &t2) // 39..0
- FeSquare(&t2, &t2) // 40..1
- for i = 1; i < 10; i++ { // 49..10
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1) // 49..0
- FeSquare(&t2, &t1) // 50..1
- for i = 1; i < 50; i++ { // 99..50
- FeSquare(&t2, &t2)
- }
- FeMul(&t2, &t2, &t1) // 99..0
- FeSquare(&t3, &t2) // 100..1
- for i = 1; i < 100; i++ { // 199..100
- FeSquare(&t3, &t3)
- }
- FeMul(&t2, &t3, &t2) // 199..0
- FeSquare(&t2, &t2) // 200..1
- for i = 1; i < 50; i++ { // 249..50
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1) // 249..0
- FeSquare(&t1, &t1) // 250..1
- for i = 1; i < 5; i++ { // 254..5
- FeSquare(&t1, &t1)
- }
- FeMul(out, &t1, &t0) // 254..5,3,1,0
-}
-
-func fePow22523(out, z *FieldElement) {
- var t0, t1, t2 FieldElement
- var i int
-
- FeSquare(&t0, z)
- for i = 1; i < 1; i++ {
- FeSquare(&t0, &t0)
- }
- FeSquare(&t1, &t0)
- for i = 1; i < 2; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, z, &t1)
- FeMul(&t0, &t0, &t1)
- FeSquare(&t0, &t0)
- for i = 1; i < 1; i++ {
- FeSquare(&t0, &t0)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t1, &t0)
- for i = 1; i < 5; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t1, &t0)
- for i = 1; i < 10; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, &t1, &t0)
- FeSquare(&t2, &t1)
- for i = 1; i < 20; i++ {
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1)
- FeSquare(&t1, &t1)
- for i = 1; i < 10; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t1, &t0)
- for i = 1; i < 50; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t1, &t1, &t0)
- FeSquare(&t2, &t1)
- for i = 1; i < 100; i++ {
- FeSquare(&t2, &t2)
- }
- FeMul(&t1, &t2, &t1)
- FeSquare(&t1, &t1)
- for i = 1; i < 50; i++ {
- FeSquare(&t1, &t1)
- }
- FeMul(&t0, &t1, &t0)
- FeSquare(&t0, &t0)
- for i = 1; i < 2; i++ {
- FeSquare(&t0, &t0)
- }
- FeMul(out, &t0, z)
-}
-
-// Group elements are members of the elliptic curve -x^2 + y^2 = 1 + d * x^2 *
-// y^2 where d = -121665/121666.
-//
-// Several representations are used:
-// ProjectiveGroupElement: (X:Y:Z) satisfying x=X/Z, y=Y/Z
-// ExtendedGroupElement: (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
-// CompletedGroupElement: ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
-// PreComputedGroupElement: (y+x,y-x,2dxy)
-
-type ProjectiveGroupElement struct {
- X, Y, Z FieldElement
-}
-
-type ExtendedGroupElement struct {
- X, Y, Z, T FieldElement
-}
-
-type CompletedGroupElement struct {
- X, Y, Z, T FieldElement
-}
-
-type PreComputedGroupElement struct {
- yPlusX, yMinusX, xy2d FieldElement
-}
-
-type CachedGroupElement struct {
- yPlusX, yMinusX, Z, T2d FieldElement
-}
-
-func (p *ProjectiveGroupElement) Zero() {
- FeZero(&p.X)
- FeOne(&p.Y)
- FeOne(&p.Z)
-}
-
-func (p *ProjectiveGroupElement) Double(r *CompletedGroupElement) {
- var t0 FieldElement
-
- FeSquare(&r.X, &p.X)
- FeSquare(&r.Z, &p.Y)
- FeSquare2(&r.T, &p.Z)
- FeAdd(&r.Y, &p.X, &p.Y)
- FeSquare(&t0, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.X)
- FeSub(&r.Z, &r.Z, &r.X)
- FeSub(&r.X, &t0, &r.Y)
- FeSub(&r.T, &r.T, &r.Z)
-}
-
-func (p *ProjectiveGroupElement) ToBytes(s *[32]byte) {
- var recip, x, y FieldElement
-
- FeInvert(&recip, &p.Z)
- FeMul(&x, &p.X, &recip)
- FeMul(&y, &p.Y, &recip)
- FeToBytes(s, &y)
- s[31] ^= FeIsNegative(&x) << 7
-}
-
-func (p *ExtendedGroupElement) Zero() {
- FeZero(&p.X)
- FeOne(&p.Y)
- FeOne(&p.Z)
- FeZero(&p.T)
-}
-
-func (p *ExtendedGroupElement) Double(r *CompletedGroupElement) {
- var q ProjectiveGroupElement
- p.ToProjective(&q)
- q.Double(r)
-}
-
-func (p *ExtendedGroupElement) ToCached(r *CachedGroupElement) {
- FeAdd(&r.yPlusX, &p.Y, &p.X)
- FeSub(&r.yMinusX, &p.Y, &p.X)
- FeCopy(&r.Z, &p.Z)
- FeMul(&r.T2d, &p.T, &d2)
-}
-
-func (p *ExtendedGroupElement) ToProjective(r *ProjectiveGroupElement) {
- FeCopy(&r.X, &p.X)
- FeCopy(&r.Y, &p.Y)
- FeCopy(&r.Z, &p.Z)
-}
-
-func (p *ExtendedGroupElement) ToBytes(s *[32]byte) {
- var recip, x, y FieldElement
-
- FeInvert(&recip, &p.Z)
- FeMul(&x, &p.X, &recip)
- FeMul(&y, &p.Y, &recip)
- FeToBytes(s, &y)
- s[31] ^= FeIsNegative(&x) << 7
-}
-
-func (p *ExtendedGroupElement) FromBytes(s *[32]byte) bool {
- var u, v, v3, vxx, check FieldElement
-
- FeFromBytes(&p.Y, s)
- FeOne(&p.Z)
- FeSquare(&u, &p.Y)
- FeMul(&v, &u, &d)
- FeSub(&u, &u, &p.Z) // y = y^2-1
- FeAdd(&v, &v, &p.Z) // v = dy^2+1
-
- FeSquare(&v3, &v)
- FeMul(&v3, &v3, &v) // v3 = v^3
- FeSquare(&p.X, &v3)
- FeMul(&p.X, &p.X, &v)
- FeMul(&p.X, &p.X, &u) // x = uv^7
-
- fePow22523(&p.X, &p.X) // x = (uv^7)^((q-5)/8)
- FeMul(&p.X, &p.X, &v3)
- FeMul(&p.X, &p.X, &u) // x = uv^3(uv^7)^((q-5)/8)
-
- var tmpX, tmp2 [32]byte
-
- FeSquare(&vxx, &p.X)
- FeMul(&vxx, &vxx, &v)
- FeSub(&check, &vxx, &u) // vx^2-u
- if FeIsNonZero(&check) == 1 {
- FeAdd(&check, &vxx, &u) // vx^2+u
- if FeIsNonZero(&check) == 1 {
- return false
- }
- FeMul(&p.X, &p.X, &SqrtM1)
-
- FeToBytes(&tmpX, &p.X)
- for i, v := range tmpX {
- tmp2[31-i] = v
- }
- }
-
- if FeIsNegative(&p.X) != (s[31] >> 7) {
- FeNeg(&p.X, &p.X)
- }
-
- FeMul(&p.T, &p.X, &p.Y)
- return true
-}
-
-func (p *CompletedGroupElement) ToProjective(r *ProjectiveGroupElement) {
- FeMul(&r.X, &p.X, &p.T)
- FeMul(&r.Y, &p.Y, &p.Z)
- FeMul(&r.Z, &p.Z, &p.T)
-}
-
-func (p *CompletedGroupElement) ToExtended(r *ExtendedGroupElement) {
- FeMul(&r.X, &p.X, &p.T)
- FeMul(&r.Y, &p.Y, &p.Z)
- FeMul(&r.Z, &p.Z, &p.T)
- FeMul(&r.T, &p.X, &p.Y)
-}
-
-func (p *PreComputedGroupElement) Zero() {
- FeOne(&p.yPlusX)
- FeOne(&p.yMinusX)
- FeZero(&p.xy2d)
-}
-
-func geAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yPlusX)
- FeMul(&r.Y, &r.Y, &q.yMinusX)
- FeMul(&r.T, &q.T2d, &p.T)
- FeMul(&r.X, &p.Z, &q.Z)
- FeAdd(&t0, &r.X, &r.X)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeAdd(&r.Z, &t0, &r.T)
- FeSub(&r.T, &t0, &r.T)
-}
-
-func geSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yMinusX)
- FeMul(&r.Y, &r.Y, &q.yPlusX)
- FeMul(&r.T, &q.T2d, &p.T)
- FeMul(&r.X, &p.Z, &q.Z)
- FeAdd(&t0, &r.X, &r.X)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeSub(&r.Z, &t0, &r.T)
- FeAdd(&r.T, &t0, &r.T)
-}
-
-func geMixedAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yPlusX)
- FeMul(&r.Y, &r.Y, &q.yMinusX)
- FeMul(&r.T, &q.xy2d, &p.T)
- FeAdd(&t0, &p.Z, &p.Z)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeAdd(&r.Z, &t0, &r.T)
- FeSub(&r.T, &t0, &r.T)
-}
-
-func geMixedSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
- var t0 FieldElement
-
- FeAdd(&r.X, &p.Y, &p.X)
- FeSub(&r.Y, &p.Y, &p.X)
- FeMul(&r.Z, &r.X, &q.yMinusX)
- FeMul(&r.Y, &r.Y, &q.yPlusX)
- FeMul(&r.T, &q.xy2d, &p.T)
- FeAdd(&t0, &p.Z, &p.Z)
- FeSub(&r.X, &r.Z, &r.Y)
- FeAdd(&r.Y, &r.Z, &r.Y)
- FeSub(&r.Z, &t0, &r.T)
- FeAdd(&r.T, &t0, &r.T)
-}
-
-func slide(r *[256]int8, a *[32]byte) {
- for i := range r {
- r[i] = int8(1 & (a[i>>3] >> uint(i&7)))
- }
-
- for i := range r {
- if r[i] != 0 {
- for b := 1; b <= 6 && i+b < 256; b++ {
- if r[i+b] != 0 {
- if r[i]+(r[i+b]<<uint(b)) <= 15 {
- r[i] += r[i+b] << uint(b)
- r[i+b] = 0
- } else if r[i]-(r[i+b]<<uint(b)) >= -15 {
- r[i] -= r[i+b] << uint(b)
- for k := i + b; k < 256; k++ {
- if r[k] == 0 {
- r[k] = 1
- break
- }
- r[k] = 0
- }
- } else {
- break
- }
- }
- }
- }
- }
-}
-
-// GeDoubleScalarMultVartime sets r = a*A + b*B
-// where a = a[0]+256*a[1]+...+256^31 a[31].
-// and b = b[0]+256*b[1]+...+256^31 b[31].
-// B is the Ed25519 base point (x,4/5) with x positive.
-func GeDoubleScalarMultVartime(r *ProjectiveGroupElement, a *[32]byte, A *ExtendedGroupElement, b *[32]byte) {
- var aSlide, bSlide [256]int8
- var Ai [8]CachedGroupElement // A,3A,5A,7A,9A,11A,13A,15A
- var t CompletedGroupElement
- var u, A2 ExtendedGroupElement
- var i int
-
- slide(&aSlide, a)
- slide(&bSlide, b)
-
- A.ToCached(&Ai[0])
- A.Double(&t)
- t.ToExtended(&A2)
-
- for i := 0; i < 7; i++ {
- geAdd(&t, &A2, &Ai[i])
- t.ToExtended(&u)
- u.ToCached(&Ai[i+1])
- }
-
- r.Zero()
-
- for i = 255; i >= 0; i-- {
- if aSlide[i] != 0 || bSlide[i] != 0 {
- break
- }
- }
-
- for ; i >= 0; i-- {
- r.Double(&t)
-
- if aSlide[i] > 0 {
- t.ToExtended(&u)
- geAdd(&t, &u, &Ai[aSlide[i]/2])
- } else if aSlide[i] < 0 {
- t.ToExtended(&u)
- geSub(&t, &u, &Ai[(-aSlide[i])/2])
- }
-
- if bSlide[i] > 0 {
- t.ToExtended(&u)
- geMixedAdd(&t, &u, &bi[bSlide[i]/2])
- } else if bSlide[i] < 0 {
- t.ToExtended(&u)
- geMixedSub(&t, &u, &bi[(-bSlide[i])/2])
- }
-
- t.ToProjective(r)
- }
-}
-
-// equal returns 1 if b == c and 0 otherwise.
-func equal(b, c int32) int32 {
- x := uint32(b ^ c)
- x--
- return int32(x >> 31)
-}
-
-// negative returns 1 if b < 0 and 0 otherwise.
-func negative(b int32) int32 {
- return (b >> 31) & 1
-}
-
-func PreComputedGroupElementCMove(t, u *PreComputedGroupElement, b int32) {
- FeCMove(&t.yPlusX, &u.yPlusX, b)
- FeCMove(&t.yMinusX, &u.yMinusX, b)
- FeCMove(&t.xy2d, &u.xy2d, b)
-}
-
-func selectPoint(t *PreComputedGroupElement, pos int32, b int32) {
- var minusT PreComputedGroupElement
- bNegative := negative(b)
- bAbs := b - (((-bNegative) & b) << 1)
-
- t.Zero()
- for i := int32(0); i < 8; i++ {
- PreComputedGroupElementCMove(t, &base[pos][i], equal(bAbs, i+1))
- }
- FeCopy(&minusT.yPlusX, &t.yMinusX)
- FeCopy(&minusT.yMinusX, &t.yPlusX)
- FeNeg(&minusT.xy2d, &t.xy2d)
- PreComputedGroupElementCMove(t, &minusT, bNegative)
-}
-
-// GeScalarMultBase computes h = a*B, where
-// a = a[0]+256*a[1]+...+256^31 a[31]
-// B is the Ed25519 base point (x,4/5) with x positive.
-//
-// Preconditions:
-// a[31] <= 127
-func GeScalarMultBase(h *ExtendedGroupElement, a *[32]byte) {
- var e [64]int8
-
- for i, v := range a {
- e[2*i] = int8(v & 15)
- e[2*i+1] = int8((v >> 4) & 15)
- }
-
- // each e[i] is between 0 and 15 and e[63] is between 0 and 7.
-
- carry := int8(0)
- for i := 0; i < 63; i++ {
- e[i] += carry
- carry = (e[i] + 8) >> 4
- e[i] -= carry << 4
- }
- e[63] += carry
- // each e[i] is between -8 and 8.
-
- h.Zero()
- var t PreComputedGroupElement
- var r CompletedGroupElement
- for i := int32(1); i < 64; i += 2 {
- selectPoint(&t, i/2, int32(e[i]))
- geMixedAdd(&r, h, &t)
- r.ToExtended(h)
- }
-
- var s ProjectiveGroupElement
-
- h.Double(&r)
- r.ToProjective(&s)
- s.Double(&r)
- r.ToProjective(&s)
- s.Double(&r)
- r.ToProjective(&s)
- s.Double(&r)
- r.ToExtended(h)
-
- for i := int32(0); i < 64; i += 2 {
- selectPoint(&t, i/2, int32(e[i]))
- geMixedAdd(&r, h, &t)
- r.ToExtended(h)
- }
-}
-
-// The scalars are GF(2^252 + 27742317777372353535851937790883648493).
-
-// Input:
-// a[0]+256*a[1]+...+256^31*a[31] = a
-// b[0]+256*b[1]+...+256^31*b[31] = b
-// c[0]+256*c[1]+...+256^31*c[31] = c
-//
-// Output:
-// s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
-// where l = 2^252 + 27742317777372353535851937790883648493.
-func ScMulAdd(s, a, b, c *[32]byte) {
- a0 := 2097151 & load3(a[:])
- a1 := 2097151 & (load4(a[2:]) >> 5)
- a2 := 2097151 & (load3(a[5:]) >> 2)
- a3 := 2097151 & (load4(a[7:]) >> 7)
- a4 := 2097151 & (load4(a[10:]) >> 4)
- a5 := 2097151 & (load3(a[13:]) >> 1)
- a6 := 2097151 & (load4(a[15:]) >> 6)
- a7 := 2097151 & (load3(a[18:]) >> 3)
- a8 := 2097151 & load3(a[21:])
- a9 := 2097151 & (load4(a[23:]) >> 5)
- a10 := 2097151 & (load3(a[26:]) >> 2)
- a11 := (load4(a[28:]) >> 7)
- b0 := 2097151 & load3(b[:])
- b1 := 2097151 & (load4(b[2:]) >> 5)
- b2 := 2097151 & (load3(b[5:]) >> 2)
- b3 := 2097151 & (load4(b[7:]) >> 7)
- b4 := 2097151 & (load4(b[10:]) >> 4)
- b5 := 2097151 & (load3(b[13:]) >> 1)
- b6 := 2097151 & (load4(b[15:]) >> 6)
- b7 := 2097151 & (load3(b[18:]) >> 3)
- b8 := 2097151 & load3(b[21:])
- b9 := 2097151 & (load4(b[23:]) >> 5)
- b10 := 2097151 & (load3(b[26:]) >> 2)
- b11 := (load4(b[28:]) >> 7)
- c0 := 2097151 & load3(c[:])
- c1 := 2097151 & (load4(c[2:]) >> 5)
- c2 := 2097151 & (load3(c[5:]) >> 2)
- c3 := 2097151 & (load4(c[7:]) >> 7)
- c4 := 2097151 & (load4(c[10:]) >> 4)
- c5 := 2097151 & (load3(c[13:]) >> 1)
- c6 := 2097151 & (load4(c[15:]) >> 6)
- c7 := 2097151 & (load3(c[18:]) >> 3)
- c8 := 2097151 & load3(c[21:])
- c9 := 2097151 & (load4(c[23:]) >> 5)
- c10 := 2097151 & (load3(c[26:]) >> 2)
- c11 := (load4(c[28:]) >> 7)
- var carry [23]int64
-
- s0 := c0 + a0*b0
- s1 := c1 + a0*b1 + a1*b0
- s2 := c2 + a0*b2 + a1*b1 + a2*b0
- s3 := c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0
- s4 := c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0
- s5 := c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0
- s6 := c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0
- s7 := c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0
- s8 := c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0
- s9 := c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0
- s10 := c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0
- s11 := c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0
- s12 := a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1
- s13 := a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2
- s14 := a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3
- s15 := a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4
- s16 := a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5
- s17 := a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6
- s18 := a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7
- s19 := a8*b11 + a9*b10 + a10*b9 + a11*b8
- s20 := a9*b11 + a10*b10 + a11*b9
- s21 := a10*b11 + a11*b10
- s22 := a11 * b11
- s23 := int64(0)
-
- carry[0] = (s0 + (1 << 20)) >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[2] = (s2 + (1 << 20)) >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[4] = (s4 + (1 << 20)) >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[12] = (s12 + (1 << 20)) >> 21
- s13 += carry[12]
- s12 -= carry[12] << 21
- carry[14] = (s14 + (1 << 20)) >> 21
- s15 += carry[14]
- s14 -= carry[14] << 21
- carry[16] = (s16 + (1 << 20)) >> 21
- s17 += carry[16]
- s16 -= carry[16] << 21
- carry[18] = (s18 + (1 << 20)) >> 21
- s19 += carry[18]
- s18 -= carry[18] << 21
- carry[20] = (s20 + (1 << 20)) >> 21
- s21 += carry[20]
- s20 -= carry[20] << 21
- carry[22] = (s22 + (1 << 20)) >> 21
- s23 += carry[22]
- s22 -= carry[22] << 21
-
- carry[1] = (s1 + (1 << 20)) >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[3] = (s3 + (1 << 20)) >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[5] = (s5 + (1 << 20)) >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
- carry[13] = (s13 + (1 << 20)) >> 21
- s14 += carry[13]
- s13 -= carry[13] << 21
- carry[15] = (s15 + (1 << 20)) >> 21
- s16 += carry[15]
- s15 -= carry[15] << 21
- carry[17] = (s17 + (1 << 20)) >> 21
- s18 += carry[17]
- s17 -= carry[17] << 21
- carry[19] = (s19 + (1 << 20)) >> 21
- s20 += carry[19]
- s19 -= carry[19] << 21
- carry[21] = (s21 + (1 << 20)) >> 21
- s22 += carry[21]
- s21 -= carry[21] << 21
-
- s11 += s23 * 666643
- s12 += s23 * 470296
- s13 += s23 * 654183
- s14 -= s23 * 997805
- s15 += s23 * 136657
- s16 -= s23 * 683901
- s23 = 0
-
- s10 += s22 * 666643
- s11 += s22 * 470296
- s12 += s22 * 654183
- s13 -= s22 * 997805
- s14 += s22 * 136657
- s15 -= s22 * 683901
- s22 = 0
-
- s9 += s21 * 666643
- s10 += s21 * 470296
- s11 += s21 * 654183
- s12 -= s21 * 997805
- s13 += s21 * 136657
- s14 -= s21 * 683901
- s21 = 0
-
- s8 += s20 * 666643
- s9 += s20 * 470296
- s10 += s20 * 654183
- s11 -= s20 * 997805
- s12 += s20 * 136657
- s13 -= s20 * 683901
- s20 = 0
-
- s7 += s19 * 666643
- s8 += s19 * 470296
- s9 += s19 * 654183
- s10 -= s19 * 997805
- s11 += s19 * 136657
- s12 -= s19 * 683901
- s19 = 0
-
- s6 += s18 * 666643
- s7 += s18 * 470296
- s8 += s18 * 654183
- s9 -= s18 * 997805
- s10 += s18 * 136657
- s11 -= s18 * 683901
- s18 = 0
-
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[12] = (s12 + (1 << 20)) >> 21
- s13 += carry[12]
- s12 -= carry[12] << 21
- carry[14] = (s14 + (1 << 20)) >> 21
- s15 += carry[14]
- s14 -= carry[14] << 21
- carry[16] = (s16 + (1 << 20)) >> 21
- s17 += carry[16]
- s16 -= carry[16] << 21
-
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
- carry[13] = (s13 + (1 << 20)) >> 21
- s14 += carry[13]
- s13 -= carry[13] << 21
- carry[15] = (s15 + (1 << 20)) >> 21
- s16 += carry[15]
- s15 -= carry[15] << 21
-
- s5 += s17 * 666643
- s6 += s17 * 470296
- s7 += s17 * 654183
- s8 -= s17 * 997805
- s9 += s17 * 136657
- s10 -= s17 * 683901
- s17 = 0
-
- s4 += s16 * 666643
- s5 += s16 * 470296
- s6 += s16 * 654183
- s7 -= s16 * 997805
- s8 += s16 * 136657
- s9 -= s16 * 683901
- s16 = 0
-
- s3 += s15 * 666643
- s4 += s15 * 470296
- s5 += s15 * 654183
- s6 -= s15 * 997805
- s7 += s15 * 136657
- s8 -= s15 * 683901
- s15 = 0
-
- s2 += s14 * 666643
- s3 += s14 * 470296
- s4 += s14 * 654183
- s5 -= s14 * 997805
- s6 += s14 * 136657
- s7 -= s14 * 683901
- s14 = 0
-
- s1 += s13 * 666643
- s2 += s13 * 470296
- s3 += s13 * 654183
- s4 -= s13 * 997805
- s5 += s13 * 136657
- s6 -= s13 * 683901
- s13 = 0
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = (s0 + (1 << 20)) >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[2] = (s2 + (1 << 20)) >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[4] = (s4 + (1 << 20)) >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- carry[1] = (s1 + (1 << 20)) >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[3] = (s3 + (1 << 20)) >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[5] = (s5 + (1 << 20)) >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[11] = s11 >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- s[0] = byte(s0 >> 0)
- s[1] = byte(s0 >> 8)
- s[2] = byte((s0 >> 16) | (s1 << 5))
- s[3] = byte(s1 >> 3)
- s[4] = byte(s1 >> 11)
- s[5] = byte((s1 >> 19) | (s2 << 2))
- s[6] = byte(s2 >> 6)
- s[7] = byte((s2 >> 14) | (s3 << 7))
- s[8] = byte(s3 >> 1)
- s[9] = byte(s3 >> 9)
- s[10] = byte((s3 >> 17) | (s4 << 4))
- s[11] = byte(s4 >> 4)
- s[12] = byte(s4 >> 12)
- s[13] = byte((s4 >> 20) | (s5 << 1))
- s[14] = byte(s5 >> 7)
- s[15] = byte((s5 >> 15) | (s6 << 6))
- s[16] = byte(s6 >> 2)
- s[17] = byte(s6 >> 10)
- s[18] = byte((s6 >> 18) | (s7 << 3))
- s[19] = byte(s7 >> 5)
- s[20] = byte(s7 >> 13)
- s[21] = byte(s8 >> 0)
- s[22] = byte(s8 >> 8)
- s[23] = byte((s8 >> 16) | (s9 << 5))
- s[24] = byte(s9 >> 3)
- s[25] = byte(s9 >> 11)
- s[26] = byte((s9 >> 19) | (s10 << 2))
- s[27] = byte(s10 >> 6)
- s[28] = byte((s10 >> 14) | (s11 << 7))
- s[29] = byte(s11 >> 1)
- s[30] = byte(s11 >> 9)
- s[31] = byte(s11 >> 17)
-}
-
-// Input:
-// s[0]+256*s[1]+...+256^63*s[63] = s
-//
-// Output:
-// s[0]+256*s[1]+...+256^31*s[31] = s mod l
-// where l = 2^252 + 27742317777372353535851937790883648493.
-func ScReduce(out *[32]byte, s *[64]byte) {
- s0 := 2097151 & load3(s[:])
- s1 := 2097151 & (load4(s[2:]) >> 5)
- s2 := 2097151 & (load3(s[5:]) >> 2)
- s3 := 2097151 & (load4(s[7:]) >> 7)
- s4 := 2097151 & (load4(s[10:]) >> 4)
- s5 := 2097151 & (load3(s[13:]) >> 1)
- s6 := 2097151 & (load4(s[15:]) >> 6)
- s7 := 2097151 & (load3(s[18:]) >> 3)
- s8 := 2097151 & load3(s[21:])
- s9 := 2097151 & (load4(s[23:]) >> 5)
- s10 := 2097151 & (load3(s[26:]) >> 2)
- s11 := 2097151 & (load4(s[28:]) >> 7)
- s12 := 2097151 & (load4(s[31:]) >> 4)
- s13 := 2097151 & (load3(s[34:]) >> 1)
- s14 := 2097151 & (load4(s[36:]) >> 6)
- s15 := 2097151 & (load3(s[39:]) >> 3)
- s16 := 2097151 & load3(s[42:])
- s17 := 2097151 & (load4(s[44:]) >> 5)
- s18 := 2097151 & (load3(s[47:]) >> 2)
- s19 := 2097151 & (load4(s[49:]) >> 7)
- s20 := 2097151 & (load4(s[52:]) >> 4)
- s21 := 2097151 & (load3(s[55:]) >> 1)
- s22 := 2097151 & (load4(s[57:]) >> 6)
- s23 := (load4(s[60:]) >> 3)
-
- s11 += s23 * 666643
- s12 += s23 * 470296
- s13 += s23 * 654183
- s14 -= s23 * 997805
- s15 += s23 * 136657
- s16 -= s23 * 683901
- s23 = 0
-
- s10 += s22 * 666643
- s11 += s22 * 470296
- s12 += s22 * 654183
- s13 -= s22 * 997805
- s14 += s22 * 136657
- s15 -= s22 * 683901
- s22 = 0
-
- s9 += s21 * 666643
- s10 += s21 * 470296
- s11 += s21 * 654183
- s12 -= s21 * 997805
- s13 += s21 * 136657
- s14 -= s21 * 683901
- s21 = 0
-
- s8 += s20 * 666643
- s9 += s20 * 470296
- s10 += s20 * 654183
- s11 -= s20 * 997805
- s12 += s20 * 136657
- s13 -= s20 * 683901
- s20 = 0
-
- s7 += s19 * 666643
- s8 += s19 * 470296
- s9 += s19 * 654183
- s10 -= s19 * 997805
- s11 += s19 * 136657
- s12 -= s19 * 683901
- s19 = 0
-
- s6 += s18 * 666643
- s7 += s18 * 470296
- s8 += s18 * 654183
- s9 -= s18 * 997805
- s10 += s18 * 136657
- s11 -= s18 * 683901
- s18 = 0
-
- var carry [17]int64
-
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[12] = (s12 + (1 << 20)) >> 21
- s13 += carry[12]
- s12 -= carry[12] << 21
- carry[14] = (s14 + (1 << 20)) >> 21
- s15 += carry[14]
- s14 -= carry[14] << 21
- carry[16] = (s16 + (1 << 20)) >> 21
- s17 += carry[16]
- s16 -= carry[16] << 21
-
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
- carry[13] = (s13 + (1 << 20)) >> 21
- s14 += carry[13]
- s13 -= carry[13] << 21
- carry[15] = (s15 + (1 << 20)) >> 21
- s16 += carry[15]
- s15 -= carry[15] << 21
-
- s5 += s17 * 666643
- s6 += s17 * 470296
- s7 += s17 * 654183
- s8 -= s17 * 997805
- s9 += s17 * 136657
- s10 -= s17 * 683901
- s17 = 0
-
- s4 += s16 * 666643
- s5 += s16 * 470296
- s6 += s16 * 654183
- s7 -= s16 * 997805
- s8 += s16 * 136657
- s9 -= s16 * 683901
- s16 = 0
-
- s3 += s15 * 666643
- s4 += s15 * 470296
- s5 += s15 * 654183
- s6 -= s15 * 997805
- s7 += s15 * 136657
- s8 -= s15 * 683901
- s15 = 0
-
- s2 += s14 * 666643
- s3 += s14 * 470296
- s4 += s14 * 654183
- s5 -= s14 * 997805
- s6 += s14 * 136657
- s7 -= s14 * 683901
- s14 = 0
-
- s1 += s13 * 666643
- s2 += s13 * 470296
- s3 += s13 * 654183
- s4 -= s13 * 997805
- s5 += s13 * 136657
- s6 -= s13 * 683901
- s13 = 0
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = (s0 + (1 << 20)) >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[2] = (s2 + (1 << 20)) >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[4] = (s4 + (1 << 20)) >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[6] = (s6 + (1 << 20)) >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[8] = (s8 + (1 << 20)) >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[10] = (s10 + (1 << 20)) >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- carry[1] = (s1 + (1 << 20)) >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[3] = (s3 + (1 << 20)) >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[5] = (s5 + (1 << 20)) >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[7] = (s7 + (1 << 20)) >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[9] = (s9 + (1 << 20)) >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[11] = (s11 + (1 << 20)) >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
- carry[11] = s11 >> 21
- s12 += carry[11]
- s11 -= carry[11] << 21
-
- s0 += s12 * 666643
- s1 += s12 * 470296
- s2 += s12 * 654183
- s3 -= s12 * 997805
- s4 += s12 * 136657
- s5 -= s12 * 683901
- s12 = 0
-
- carry[0] = s0 >> 21
- s1 += carry[0]
- s0 -= carry[0] << 21
- carry[1] = s1 >> 21
- s2 += carry[1]
- s1 -= carry[1] << 21
- carry[2] = s2 >> 21
- s3 += carry[2]
- s2 -= carry[2] << 21
- carry[3] = s3 >> 21
- s4 += carry[3]
- s3 -= carry[3] << 21
- carry[4] = s4 >> 21
- s5 += carry[4]
- s4 -= carry[4] << 21
- carry[5] = s5 >> 21
- s6 += carry[5]
- s5 -= carry[5] << 21
- carry[6] = s6 >> 21
- s7 += carry[6]
- s6 -= carry[6] << 21
- carry[7] = s7 >> 21
- s8 += carry[7]
- s7 -= carry[7] << 21
- carry[8] = s8 >> 21
- s9 += carry[8]
- s8 -= carry[8] << 21
- carry[9] = s9 >> 21
- s10 += carry[9]
- s9 -= carry[9] << 21
- carry[10] = s10 >> 21
- s11 += carry[10]
- s10 -= carry[10] << 21
-
- out[0] = byte(s0 >> 0)
- out[1] = byte(s0 >> 8)
- out[2] = byte((s0 >> 16) | (s1 << 5))
- out[3] = byte(s1 >> 3)
- out[4] = byte(s1 >> 11)
- out[5] = byte((s1 >> 19) | (s2 << 2))
- out[6] = byte(s2 >> 6)
- out[7] = byte((s2 >> 14) | (s3 << 7))
- out[8] = byte(s3 >> 1)
- out[9] = byte(s3 >> 9)
- out[10] = byte((s3 >> 17) | (s4 << 4))
- out[11] = byte(s4 >> 4)
- out[12] = byte(s4 >> 12)
- out[13] = byte((s4 >> 20) | (s5 << 1))
- out[14] = byte(s5 >> 7)
- out[15] = byte((s5 >> 15) | (s6 << 6))
- out[16] = byte(s6 >> 2)
- out[17] = byte(s6 >> 10)
- out[18] = byte((s6 >> 18) | (s7 << 3))
- out[19] = byte(s7 >> 5)
- out[20] = byte(s7 >> 13)
- out[21] = byte(s8 >> 0)
- out[22] = byte(s8 >> 8)
- out[23] = byte((s8 >> 16) | (s9 << 5))
- out[24] = byte(s9 >> 3)
- out[25] = byte(s9 >> 11)
- out[26] = byte((s9 >> 19) | (s10 << 2))
- out[27] = byte(s10 >> 6)
- out[28] = byte((s10 >> 14) | (s11 << 7))
- out[29] = byte(s11 >> 1)
- out[30] = byte(s11 >> 9)
- out[31] = byte(s11 >> 17)
-}
+++ /dev/null
-*.swp
-*.swo
-vendor
-shunit2
+++ /dev/null
-package crypto_test
-
-import (
- "fmt"
- "testing"
-
- "github.com/stretchr/testify/assert"
- "github.com/stretchr/testify/require"
- data "github.com/tendermint/go-wire/data"
-)
-
-type PubName struct {
- PubNameInner
-}
-
-type PubNameInner interface {
- AssertIsPubNameInner()
- String() string
-}
-
-func (p PubName) MarshalJSON() ([]byte, error) {
- return pubNameMapper.ToJSON(p.PubNameInner)
-}
-
-func (p *PubName) UnmarshalJSON(data []byte) error {
- parsed, err := pubNameMapper.FromJSON(data)
- if err == nil && parsed != nil {
- p.PubNameInner = parsed.(PubNameInner)
- }
- return err
-}
-
-var pubNameMapper = data.NewMapper(PubName{}).
- RegisterImplementation(PubNameFoo{}, "foo", 1).
- RegisterImplementation(PubNameBar{}, "bar", 2)
-
-func (f PubNameFoo) AssertIsPubNameInner() {}
-func (f PubNameBar) AssertIsPubNameInner() {}
-
-//----------------------------------------
-
-type PubNameFoo struct {
- Name string
-}
-
-func (f PubNameFoo) String() string { return "Foo: " + f.Name }
-
-type PubNameBar struct {
- Age int
-}
-
-func (b PubNameBar) String() string { return fmt.Sprintf("Bar #%d", b.Age) }
-
-//----------------------------------------
-
-// TestEncodeDemo tries the various strategies to encode the objects
-func TestEncodeDemo(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- cases := []struct {
- in, out PubNameInner
- expected string
- }{
- {PubName{PubNameFoo{"pub-foo"}}, &PubName{}, "Foo: pub-foo"},
- {PubName{PubNameBar{7}}, &PubName{}, "Bar #7"},
- }
-
- for i, tc := range cases {
-
- // Make sure it is proper to start
- require.Equal(tc.expected, tc.in.String())
-
- // Try to encode as binary
- b, err := data.ToWire(tc.in)
- if assert.Nil(err, "%d: %#v", i, tc.in) {
- err2 := data.FromWire(b, tc.out)
- if assert.Nil(err2) {
- assert.Equal(tc.expected, tc.out.String())
- }
- }
-
- // Try to encode it as json
- j, err := data.ToJSON(tc.in)
- if assert.Nil(err, "%d: %#v", i, tc.in) {
- err2 := data.FromJSON(j, tc.out)
- if assert.Nil(err2) {
- assert.Equal(tc.expected, tc.out.String())
- }
- }
- }
-}
+++ /dev/null
-// Copyright 2017 Tendermint. All Rights Reserved.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package crypto_test
-
-import (
- "fmt"
-
- "github.com/tendermint/go-crypto"
-)
-
-func ExampleSha256() {
- sum := crypto.Sha256([]byte("This is Tendermint"))
- fmt.Printf("%x\n", sum)
- // Output:
- // f91afb642f3d1c87c17eb01aae5cb65c242dfdbe7cf1066cc260f4ce5d33b94e
-}
+++ /dev/null
-package crypto
-
-import (
- "crypto/sha256"
-)
-
-func Sha256(bytes []byte) []byte {
- hasher := sha256.New()
- hasher.Write(bytes)
- return hasher.Sum(nil)
-}
+++ /dev/null
-package crypto
-
-import (
- "encoding/hex"
-
- "github.com/tendermint/ed25519"
- "github.com/tendermint/go-wire"
- "github.com/tendermint/go-wire/data"
-)
-
-func PrivKeyFromBytes(privKeyBytes []byte) (privKey PrivKey, err error) {
- err = wire.ReadBinaryBytes(privKeyBytes, &privKey)
- if err == nil {
- // add support for a ValidateKey method on PrivKeys
- // to make sure they load correctly
- val, ok := privKey.Unwrap().(validatable)
- if ok {
- err = val.ValidateKey()
- }
- }
- return
-}
-
-// validatable is an optional interface for keys that want to
-// check integrity
-type validatable interface {
- ValidateKey() error
-}
-
-//----------------------------------------
-
-// DO NOT USE THIS INTERFACE.
-// You probably want to use PrivKey
-// +gen wrapper:"PrivKey,Impl[PrivKeyEd25519,PrivKeySecp256k1],ed25519,secp256k1"
-type PrivKeyInner interface {
- Sign(msg []byte) Signature
- PubKey() PubKey
- Wrap() PrivKey
-}
-
-//-------------------------------------
-
-var _ PrivKeyInner = PrivKeyEd25519{}
-
-// Implements PrivKey
-type PrivKeyEd25519 [64]byte
-
-func (privKey PrivKeyEd25519) Sign(msg []byte) Signature {
- privKeyBytes := [64]byte(privKey)
- signatureBytes := ed25519.Sign(&privKeyBytes, msg)
- return SignatureEd25519(*signatureBytes).Wrap()
-}
-
-func (privKey PrivKeyEd25519) PubKey() PubKey {
- privKeyBytes := [64]byte(privKey)
- pubBytes := *ed25519.MakePublicKey(&privKeyBytes)
- return PubKeyEd25519(pubBytes).Wrap()
-}
-
-func (p PrivKeyEd25519) MarshalJSON() ([]byte, error) {
- return data.Encoder.Marshal(p[:])
-}
-
-func (p *PrivKeyEd25519) UnmarshalJSON(enc []byte) error {
- var ref []byte
- err := data.Encoder.Unmarshal(&ref, enc)
- copy(p[:], ref)
- return err
-}
-
-func (privKey PrivKeyEd25519) String() string {
- return hex.EncodeToString(privKey[:])
-}
-
-func GenPrivKeyEd25519() PrivKeyEd25519 {
- privKeyBytes := new([64]byte)
- copy(privKeyBytes[:32], CRandBytes(32))
- ed25519.MakePublicKey(privKeyBytes)
- return PrivKeyEd25519(*privKeyBytes)
-}
+++ /dev/null
-// Generated by: main
-// TypeWriter: wrapper
-// Directive: +gen on PrivKeyInner
-
-package crypto
-
-import (
- "github.com/tendermint/go-wire/data"
-)
-
-// Auto-generated adapters for happily unmarshaling interfaces
-// Apache License 2.0
-// Copyright (c) 2017 Ethan Frey (ethan.frey@tendermint.com)
-
-type PrivKey struct {
- PrivKeyInner "json:\"unwrap\""
-}
-
-var PrivKeyMapper = data.NewMapper(PrivKey{})
-
-func (h PrivKey) MarshalJSON() ([]byte, error) {
- return PrivKeyMapper.ToJSON(h.PrivKeyInner)
-}
-
-func (h *PrivKey) UnmarshalJSON(data []byte) (err error) {
- parsed, err := PrivKeyMapper.FromJSON(data)
- if err == nil && parsed != nil {
- h.PrivKeyInner = parsed.(PrivKeyInner)
- }
- return err
-}
-
-// Unwrap recovers the concrete interface safely (regardless of levels of embeds)
-func (h PrivKey) Unwrap() PrivKeyInner {
- hi := h.PrivKeyInner
- for wrap, ok := hi.(PrivKey); ok; wrap, ok = hi.(PrivKey) {
- hi = wrap.PrivKeyInner
- }
- return hi
-}
-
-/*** below are bindings for each implementation ***/
-
-func init() {
- PrivKeyMapper.RegisterImplementation(PrivKeyEd25519{}, "ed25519", 0x1)
-}
-
-func (hi PrivKeyEd25519) Wrap() PrivKey {
- return PrivKey{hi}
-}
+++ /dev/null
-package crypto
-
-import (
- "bytes"
-
- "github.com/tendermint/ed25519"
- data "github.com/tendermint/go-wire/data"
- . "github.com/tendermint/tmlibs/common"
-)
-
-//----------------------------------------
-
-// DO NOT USE THIS INTERFACE.
-// You probably want to use PubKey
-// +gen wrapper:"PubKey,Impl[PubKeyEd25519,PubKeySecp256k1],ed25519,secp256k1"
-type PubKeyInner interface {
- KeyString() string
- VerifyBytes(msg []byte, sig Signature) bool
- Equals(PubKey) bool
- Wrap() PubKey
-}
-
-//-------------------------------------
-
-var _ PubKeyInner = PubKeyEd25519{}
-
-// Implements PubKeyInner
-type PubKeyEd25519 [32]byte
-
-func (pubKey PubKeyEd25519) VerifyBytes(msg []byte, sig_ Signature) bool {
- // make sure we use the same algorithm to sign
- sig, ok := sig_.Unwrap().(SignatureEd25519)
- if !ok {
- return false
- }
- pubKeyBytes := [32]byte(pubKey)
- sigBytes := [64]byte(sig)
- return ed25519.Verify(&pubKeyBytes, msg, &sigBytes)
-}
-
-func (p PubKeyEd25519) MarshalJSON() ([]byte, error) {
- return data.Encoder.Marshal(p[:])
-}
-
-func (p *PubKeyEd25519) UnmarshalJSON(enc []byte) error {
- var ref []byte
- err := data.Encoder.Unmarshal(&ref, enc)
- copy(p[:], ref)
- return err
-}
-
-func (pubKey PubKeyEd25519) String() string {
- return Fmt("PubKeyEd25519{%X}", pubKey[:])
-}
-
-// Must return the full bytes in hex.
-// Used for map keying, etc.
-func (pubKey PubKeyEd25519) KeyString() string {
- return Fmt("%X", pubKey[:])
-}
-
-func (pubKey PubKeyEd25519) Equals(other PubKey) bool {
- if otherEd, ok := other.Unwrap().(PubKeyEd25519); ok {
- return bytes.Equal(pubKey[:], otherEd[:])
- } else {
- return false
- }
-}
+++ /dev/null
-// Generated by: main
-// TypeWriter: wrapper
-// Directive: +gen on PubKeyInner
-
-package crypto
-
-import (
- "github.com/tendermint/go-wire/data"
-)
-
-// Auto-generated adapters for happily unmarshaling interfaces
-// Apache License 2.0
-// Copyright (c) 2017 Ethan Frey (ethan.frey@tendermint.com)
-
-type PubKey struct {
- PubKeyInner "json:\"unwrap\""
-}
-
-var PubKeyMapper = data.NewMapper(PubKey{})
-
-func (h PubKey) MarshalJSON() ([]byte, error) {
- return PubKeyMapper.ToJSON(h.PubKeyInner)
-}
-
-func (h *PubKey) UnmarshalJSON(data []byte) (err error) {
- parsed, err := PubKeyMapper.FromJSON(data)
- if err == nil && parsed != nil {
- h.PubKeyInner = parsed.(PubKeyInner)
- }
- return err
-}
-
-// Unwrap recovers the concrete interface safely (regardless of levels of embeds)
-func (h PubKey) Unwrap() PubKeyInner {
- hi := h.PubKeyInner
- for wrap, ok := hi.(PubKey); ok; wrap, ok = hi.(PubKey) {
- hi = wrap.PubKeyInner
- }
- return hi
-}
-
-/*** below are bindings for each implementation ***/
-
-func init() {
- PubKeyMapper.RegisterImplementation(PubKeyEd25519{}, "ed25519", 0x1)
-}
-
-func (hi PubKeyEd25519) Wrap() PubKey {
- return PubKey{hi}
-}
+++ /dev/null
-package crypto
-
-import (
- "crypto/aes"
- "crypto/cipher"
- crand "crypto/rand"
- "io"
- "sync"
-
- . "github.com/tendermint/tmlibs/common"
-)
-
-var gRandInfo *randInfo
-
-func init() {
- gRandInfo = &randInfo{}
- gRandInfo.MixEntropy(randBytes(32)) // Init
-}
-
-// Mix additional bytes of randomness, e.g. from hardware, user-input, etc.
-// It is OK to call it multiple times. It does not diminish security.
-func MixEntropy(seedBytes []byte) {
- gRandInfo.MixEntropy(seedBytes)
-}
-
-// This only uses the OS's randomness
-func randBytes(numBytes int) []byte {
- b := make([]byte, numBytes)
- _, err := crand.Read(b)
- if err != nil {
- PanicCrisis(err)
- }
- return b
-}
-
-// This uses the OS and the Seed(s).
-func CRandBytes(numBytes int) []byte {
- b := make([]byte, numBytes)
- _, err := gRandInfo.Read(b)
- if err != nil {
- PanicCrisis(err)
- }
- return b
-}
-
-//--------------------------------------------------------------------------------
-
-type randInfo struct {
- mtx sync.Mutex
- seedBytes [32]byte
- cipherAES256 cipher.Block
- streamAES256 cipher.Stream
- reader io.Reader
-}
-
-// You can call this as many times as you'd like.
-// XXX TODO review
-func (ri *randInfo) MixEntropy(seedBytes []byte) {
- ri.mtx.Lock()
- defer ri.mtx.Unlock()
- // Make new ri.seedBytes
- hashBytes := Sha256(seedBytes)
- hashBytes32 := [32]byte{}
- copy(hashBytes32[:], hashBytes)
- ri.seedBytes = xorBytes32(ri.seedBytes, hashBytes32)
- // Create new cipher.Block
- var err error
- ri.cipherAES256, err = aes.NewCipher(ri.seedBytes[:])
- if err != nil {
- PanicSanity("Error creating AES256 cipher: " + err.Error())
- }
- // Create new stream
- ri.streamAES256 = cipher.NewCTR(ri.cipherAES256, randBytes(aes.BlockSize))
- // Create new reader
- ri.reader = &cipher.StreamReader{S: ri.streamAES256, R: crand.Reader}
-}
-
-func (ri *randInfo) Read(b []byte) (n int, err error) {
- ri.mtx.Lock()
- defer ri.mtx.Unlock()
- return ri.reader.Read(b)
-}
-
-func xorBytes32(bytesA [32]byte, bytesB [32]byte) (res [32]byte) {
- for i, b := range bytesA {
- res[i] = b ^ bytesB[i]
- }
- return res
-}
+++ /dev/null
-package crypto
-
-import (
- "github.com/tendermint/go-wire"
- data "github.com/tendermint/go-wire/data"
-)
-
-func SignatureFromBytes(sigBytes []byte) (sig Signature, err error) {
- err = wire.ReadBinaryBytes(sigBytes, &sig)
- return
-}
-
-//----------------------------------------
-
-// DO NOT USE THIS INTERFACE.
-// You probably want to use Signature.
-// +gen wrapper:"Signature,Impl[SignatureEd25519,SignatureSecp256k1],ed25519,secp256k1"
-type SignatureInner interface {
- Bytes() []byte
- Wrap() Signature
-}
-
-//-------------------------------------
-
-var _ SignatureInner = SignatureEd25519{}
-
-// Implements Signature
-type SignatureEd25519 [64]byte
-
-func (sig SignatureEd25519) Bytes() []byte {
- return wire.BinaryBytes(Signature{sig})
-}
-
-func (sig SignatureEd25519) MarshalJSON() ([]byte, error) {
- return data.Encoder.Marshal(sig[:])
-}
-
-func (sig *SignatureEd25519) UnmarshalJSON(enc []byte) error {
- var ref []byte
- err := data.Encoder.Unmarshal(&ref, enc)
- copy(sig[:], ref)
- return err
-}
+++ /dev/null
-// Generated by: main
-// TypeWriter: wrapper
-// Directive: +gen on SignatureInner
-
-package crypto
-
-import (
- "github.com/tendermint/go-wire/data"
-)
-
-// Auto-generated adapters for happily unmarshaling interfaces
-// Apache License 2.0
-// Copyright (c) 2017 Ethan Frey (ethan.frey@tendermint.com)
-
-type Signature struct {
- SignatureInner "json:\"unwrap\""
-}
-
-var SignatureMapper = data.NewMapper(Signature{})
-
-func (h Signature) MarshalJSON() ([]byte, error) {
- return SignatureMapper.ToJSON(h.SignatureInner)
-}
-
-func (h *Signature) UnmarshalJSON(data []byte) (err error) {
- parsed, err := SignatureMapper.FromJSON(data)
- if err == nil && parsed != nil {
- h.SignatureInner = parsed.(SignatureInner)
- }
- return err
-}
-
-// Unwrap recovers the concrete interface safely (regardless of levels of embeds)
-func (h Signature) Unwrap() SignatureInner {
- hi := h.SignatureInner
- for wrap, ok := hi.(Signature); ok; wrap, ok = hi.(Signature) {
- hi = wrap.SignatureInner
- }
- return hi
-}
-
-/*** below are bindings for each implementation ***/
-
-func init() {
- SignatureMapper.RegisterImplementation(SignatureEd25519{}, "ed25519", 0x1)
-}
-
-func (hi SignatureEd25519) Wrap() Signature {
- return Signature{hi}
-}
+++ /dev/null
-.PHONY: docs
-REPO:=github.com/tendermint/go-wire/data
-
-docs:
- @go get github.com/davecheney/godoc2md
- godoc2md $(REPO) > README.md
-
-test:
- go test ./...
+++ /dev/null
-
-
-# data
-`import "github.com/tendermint/go-wire/data"`
-
-* [Overview](#pkg-overview)
-* [Index](#pkg-index)
-
-## <a name="pkg-overview">Overview</a>
-Data is designed to provide a standard interface and helper functions to
-easily allow serialization and deserialization of your data structures
-in both binary and json representations.
-
-This is commonly needed for interpreting transactions or stored data in the
-abci app, as well as accepting json input in the light-client proxy. If we
-can standardize how we pass data around the app, we can also allow more
-extensions, like data storage that can interpret the meaning of the []byte
-passed in, and use that to index multiple fields for example.
-
-Serialization of data is pretty automatic using standard json and go-wire
-encoders. The main issue is deserialization, especially when using interfaces
-where there are many possible concrete types.
-
-go-wire handles this by registering the types and providing a custom
-deserializer:
-
-
- var _ = wire.RegisterInterface(
- struct{ PubKey }{},
- wire.ConcreteType{PubKeyEd25519{}, PubKeyTypeEd25519},
- wire.ConcreteType{PubKeySecp256k1{}, PubKeyTypeSecp256k1},
- )
-
- func PubKeyFromBytes(pubKeyBytes []byte) (pubKey PubKey, err error) {
- err = wire.ReadBinaryBytes(pubKeyBytes, &pubKey)
- return
- }
-
- func (pubKey PubKeyEd25519) Bytes() []byte {
- return wire.BinaryBytes(struct{ PubKey }{pubKey})
- }
-
-This prepends a type-byte to the binary representation upon serialization and
-using that byte to switch between various representations on deserialization.
-go-wire also supports something similar in json, but it leads to kind of ugly
-mixed-types arrays, and requires using the go-wire json parser, which is
-limited relative to the standard library encoding/json library.
-
-In json, the typical idiom is to use a type string and message data:
-
-
- {
- "type": "this part tells you how to interpret the message",
- "data": ...the actual message is here, in some kind of json...
- }
-
-I took inspiration from two blog posts, that demonstrate how to use this
-to build (de)serialization in a go-wire like way.
-
-* <a href="http://eagain.net/articles/go-dynamic-json/">http://eagain.net/articles/go-dynamic-json/</a>
-* <a href="http://eagain.net/articles/go-json-kind/">http://eagain.net/articles/go-json-kind/</a>
-
-This package unifies these two in a single Mapper.
-
-You app needs to do three things to take full advantage of this:
-
-1. For every interface you wish to serialize, define a holder struct with some helper methods, like FooerS wraps Fooer in common_test.go
-2. In all structs that include this interface, include the wrapping struct instead. Functionally, this also fulfills the interface, so except for setting it or casting it to a sub-type it works the same.
-3. Register the interface implementations as in the last init of common_test.go. If you are currently using go-wire, you should be doing this already
-
-The benefits here is you can now run any of the following methods, both for
-efficient storage in our go app, and a common format for rpc / humans.
-
-
- orig := FooerS{foo}
-
- // read/write binary a la tendermint/go-wire
- bparsed := FooerS{}
- err := wire.ReadBinaryBytes(
- wire.BinaryBytes(orig), &bparsed)
-
- // read/write json a la encoding/json
- jparsed := FooerS{}
- j, err := json.MarshalIndent(orig, "", "\t")
- err = json.Unmarshal(j, &jparsed)
-
-See <a href="https://github.com/tendermint/go-wire/data/blob/master/common_test.go">https://github.com/tendermint/go-wire/data/blob/master/common_test.go</a> to see
-how to set up your code to use this.
-
-
-
-
-## <a name="pkg-index">Index</a>
-* [Variables](#pkg-variables)
-* [type ByteEncoder](#ByteEncoder)
-* [type Bytes](#Bytes)
- * [func (b Bytes) MarshalJSON() ([]byte, error)](#Bytes.MarshalJSON)
- * [func (b *Bytes) UnmarshalJSON(data []byte) error](#Bytes.UnmarshalJSON)
-* [type JSONMapper](#JSONMapper)
- * [func (m *JSONMapper) FromJSON(data []byte) (interface{}, error)](#JSONMapper.FromJSON)
- * [func (m *JSONMapper) ToJSON(data interface{}) ([]byte, error)](#JSONMapper.ToJSON)
-* [type Mapper](#Mapper)
- * [func NewMapper(base interface{}) Mapper](#NewMapper)
- * [func (m Mapper) RegisterInterface(kind string, b byte, data interface{}) Mapper](#Mapper.RegisterInterface)
-
-
-#### <a name="pkg-files">Package files</a>
-[binary.go](/src/github.com/tendermint/go-wire/data/binary.go) [bytes.go](/src/github.com/tendermint/go-wire/data/bytes.go) [docs.go](/src/github.com/tendermint/go-wire/data/docs.go) [json.go](/src/github.com/tendermint/go-wire/data/json.go) [wrapper.go](/src/github.com/tendermint/go-wire/data/wrapper.go)
-
-
-
-## <a name="pkg-variables">Variables</a>
-``` go
-var (
- Encoder ByteEncoder = hexEncoder{}
- HexEncoder = hexEncoder{}
- B64Encoder = base64Encoder{base64.URLEncoding}
- RawB64Encoder = base64Encoder{base64.RawURLEncoding}
-)
-```
-Encoder is a global setting for all byte encoding
-This is the default. Please override in the main()/init()
-of your program to change how byte slices are presented
-
-
-
-
-## <a name="ByteEncoder">type</a> [ByteEncoder](/src/target/bytes.go?s=1436:1547#L44)
-``` go
-type ByteEncoder interface {
- Marshal(bytes []byte) ([]byte, error)
- Unmarshal(dst *[]byte, src []byte) error
-}
-```
-ByteEncoder handles both the marshalling and unmarshalling of
-an arbitrary byte slice.
-
-All Bytes use the global Encoder set in this package.
-If you want to use this encoding for byte arrays, you can just
-implement a simple custom marshaller for your byte array
-
-
- type Dings [64]byte
-
- func (d Dings) MarshalJSON() ([]byte, error) {
- return data.Encoder.Marshal(d[:])
- }
-
- func (d *Dings) UnmarshalJSON(data []byte) error {
- ref := (*d)[:]
- return data.Encoder.Unmarshal(&ref, data)
- }
-
-
-
-
-
-
-
-
-
-
-## <a name="Bytes">type</a> [Bytes](/src/target/bytes.go?s=681:698#L16)
-``` go
-type Bytes []byte
-```
-Bytes is a special byte slice that allows us to control the
-serialization format per app.
-
-Thus, basecoin could use hex, another app base64, and a third
-app base58...
-
-
-
-
-
-
-
-
-
-
-### <a name="Bytes.MarshalJSON">func</a> (Bytes) [MarshalJSON](/src/target/bytes.go?s=700:744#L18)
-``` go
-func (b Bytes) MarshalJSON() ([]byte, error)
-```
-
-
-
-### <a name="Bytes.UnmarshalJSON">func</a> (\*Bytes) [UnmarshalJSON](/src/target/bytes.go?s=777:825#L22)
-``` go
-func (b *Bytes) UnmarshalJSON(data []byte) error
-```
-
-
-
-## <a name="JSONMapper">type</a> [JSONMapper](/src/target/json.go?s=80:178#L1)
-``` go
-type JSONMapper struct {
- // contains filtered or unexported fields
-}
-```
-
-
-
-
-
-
-
-
-
-### <a name="JSONMapper.FromJSON">func</a> (\*JSONMapper) [FromJSON](/src/target/json.go?s=1202:1265#L41)
-``` go
-func (m *JSONMapper) FromJSON(data []byte) (interface{}, error)
-```
-FromJSON will deserialize the output of ToJSON for every registered
-implementation of the interface
-
-
-
-
-### <a name="JSONMapper.ToJSON">func</a> (\*JSONMapper) [ToJSON](/src/target/json.go?s=1814:1875#L67)
-``` go
-func (m *JSONMapper) ToJSON(data interface{}) ([]byte, error)
-```
-ToJson will serialize a registered implementation into a format like:
-
-
- {
- "type": "foo",
- "data": {
- "name": "dings"
- }
- }
-
-this allows us to properly deserialize with FromJSON
-
-
-
-
-## <a name="Mapper">type</a> [Mapper](/src/target/wrapper.go?s=485:535#L5)
-``` go
-type Mapper struct {
- *JSONMapper
- // contains filtered or unexported fields
-}
-```
-Mapper is the main entry point in the package.
-
-On init, you should call NewMapper() for each interface type you want
-to support flexible de-serialization, and then
-RegisterInterface() in the init() function for each implementation of these
-interfaces.
-
-Note that unlike go-wire, you can call RegisterInterface separately from
-different locations with each implementation, not all in one place.
-Just be careful not to use the same key or byte, of init will *panic*
-
-
-
-
-
-
-
-### <a name="NewMapper">func</a> [NewMapper](/src/target/wrapper.go?s=747:786#L17)
-``` go
-func NewMapper(base interface{}) Mapper
-```
-NewMapper creates a Mapper.
-
-If you have:
-
-
- type Foo interface {....}
- type FooS struct { Foo }
-
-then you should pass in FooS{} in NewMapper, and implementations of Foo
-in RegisterInterface
-
-
-
-
-
-### <a name="Mapper.RegisterInterface">func</a> (Mapper) [RegisterInterface](/src/target/wrapper.go?s=1184:1263#L30)
-``` go
-func (m Mapper) RegisterInterface(kind string, b byte, data interface{}) Mapper
-```
-RegisterInterface should be called once for each implementation of the
-interface that we wish to support.
-
-kind is the type string used in the json representation, while b is the
-type byte used in the go-wire representation. data is one instance of this
-concrete type, like Bar{}
-
-
-
-
-
-
-
-
-- - -
-Generated by [godoc2md](http://godoc.org/github.com/davecheney/godoc2md)
+++ /dev/null
-package data
-
-import (
- "github.com/pkg/errors"
- wire "github.com/tendermint/go-wire"
-)
-
-type binaryMapper struct {
- base interface{}
- impls []wire.ConcreteType
-}
-
-func newBinaryMapper(base interface{}) *binaryMapper {
- return &binaryMapper{
- base: base,
- }
-}
-
-// registerImplementation allows you to register multiple concrete types.
-//
-// We call wire.RegisterInterface with the entire (growing list) each time,
-// as we do not know when the end is near.
-func (m *binaryMapper) registerImplementation(data interface{}, kind string, b byte) {
- m.impls = append(m.impls, wire.ConcreteType{O: data, Byte: b})
- wire.RegisterInterface(m.base, m.impls...)
-}
-
-// ToWire is a convenience method to serialize with go-wire
-// error is there to keep the same interface as json, but always nil
-func ToWire(o interface{}) ([]byte, error) {
- return wire.BinaryBytes(o), nil
-}
-
-// FromWire is a convenience method to deserialize with go-wire
-func FromWire(d []byte, o interface{}) error {
- return errors.WithStack(
- wire.ReadBinaryBytes(d, o))
-}
+++ /dev/null
-package data_test
-
-import (
- "testing"
-
- "github.com/stretchr/testify/assert"
- "github.com/stretchr/testify/require"
- wire "github.com/tendermint/go-wire"
-)
-
-func TestSimpleBinary(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- cases := []struct {
- foo Fooer
- }{
- {foo: Bar{Name: "Fly"}},
- {foo: Baz{Name: "For Bar"}},
- }
-
- for _, tc := range cases {
- assert.NotEmpty(tc.foo.Foo())
- wrap := FooerS{tc.foo}
- parsed := FooerS{}
- d := wire.BinaryBytes(wrap)
- require.NotEmpty(d)
- err := wire.ReadBinaryBytes(d, &parsed)
- require.Nil(err, "%+v", err)
- assert.Equal(tc.foo.Foo(), parsed.Foo())
- }
-}
-
-func TestNestedBinary(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- cases := []struct {
- expected string
- foo Fooer
- }{
- {"Bar Fly", Bar{Name: "Fly"}},
- {"Foz Baz", Baz{Name: "For Bar"}},
- {"My: Bar None", Nested{"My", FooerS{Bar{"None"}}}},
- }
-
- for _, tc := range cases {
- assert.Equal(tc.expected, tc.foo.Foo())
- wrap := FooerS{tc.foo}
- parsed := FooerS{}
- d := wire.BinaryBytes(wrap)
- require.NotEmpty(d)
- err := wire.ReadBinaryBytes(d, &parsed)
- require.Nil(err, "%+v", err)
- assert.Equal(tc.expected, parsed.Foo())
- }
-}
+++ /dev/null
-package data
-
-import (
- "encoding/base64"
- "encoding/hex"
- "encoding/json"
- "strings"
-
- "github.com/pkg/errors"
-)
-
-// Encoder is a global setting for all byte encoding
-// This is the default. Please override in the main()/init()
-// of your program to change how byte slices are presented
-//
-// In addition to these implementation, you can also find
-// BTCEncoder and FlickrEncoder that use base58 variants in
-// github.com/tendermint/go-wire/data/base58
-var (
- Encoder ByteEncoder = hexEncoder{}
- HexEncoder = hexEncoder{}
- B64Encoder = base64Encoder{base64.URLEncoding}
- RawB64Encoder = base64Encoder{base64.RawURLEncoding}
-)
-
-// Bytes is a special byte slice that allows us to control the
-// serialization format per app.
-//
-// Thus, basecoin could use hex, another app base64, and a third
-// app base58...
-type Bytes []byte
-
-func (b Bytes) MarshalJSON() ([]byte, error) {
- return Encoder.Marshal(b)
-}
-
-func (b *Bytes) UnmarshalJSON(data []byte) error {
- ref := (*[]byte)(b)
- return Encoder.Unmarshal(ref, data)
-}
-
-// Allow it to fulfill various interfaces in light-client, etc...
-func (b Bytes) Bytes() []byte {
- return b
-}
-
-// String gets a simple string for printing (the json output minus quotes)
-func (b Bytes) String() string {
- raw, err := Encoder.Marshal(b)
- l := len(raw)
- if err != nil || l < 2 {
- return "Bytes<?????>"
- }
- return string(raw[1 : l-1])
-}
-
-// ByteEncoder handles both the marshalling and unmarshalling of
-// an arbitrary byte slice.
-//
-// All Bytes use the global Encoder set in this package.
-// If you want to use this encoding for byte arrays, you can just
-// implement a simple custom marshaller for your byte array
-//
-// type Dings [64]byte
-//
-// func (d Dings) MarshalJSON() ([]byte, error) {
-// return data.Encoder.Marshal(d[:])
-// }
-//
-// func (d *Dings) UnmarshalJSON(enc []byte) error {
-// var ref []byte
-// err := data.Encoder.Unmarshal(&ref, enc)
-// copy(d[:], ref)
-// return err
-// }
-type ByteEncoder interface {
- Marshal(bytes []byte) ([]byte, error)
- Unmarshal(dst *[]byte, src []byte) error
-}
-
-// hexEncoder implements ByteEncoder encoding the slice as a hexidecimal
-// string
-type hexEncoder struct{}
-
-var _ ByteEncoder = hexEncoder{}
-
-func (_ hexEncoder) Unmarshal(dst *[]byte, src []byte) (err error) {
- var s string
- err = json.Unmarshal(src, &s)
- if err != nil {
- return errors.Wrap(err, "parse string")
- }
- // and interpret that string as hex
- *dst, err = hex.DecodeString(s)
- return err
-}
-
-func (_ hexEncoder) Marshal(bytes []byte) ([]byte, error) {
- s := strings.ToUpper(hex.EncodeToString(bytes))
- return json.Marshal(s)
-}
-
-// base64Encoder implements ByteEncoder encoding the slice as
-// base64 url-safe encoding
-type base64Encoder struct {
- *base64.Encoding
-}
-
-var _ ByteEncoder = base64Encoder{}
-
-func (e base64Encoder) Unmarshal(dst *[]byte, src []byte) (err error) {
- var s string
- err = json.Unmarshal(src, &s)
- if err != nil {
- return errors.Wrap(err, "parse string")
- }
- *dst, err = e.DecodeString(s)
- return err
-}
-
-func (e base64Encoder) Marshal(bytes []byte) ([]byte, error) {
- s := e.EncodeToString(bytes)
- return json.Marshal(s)
-}
+++ /dev/null
-package data_test
-
-import (
- "encoding/json"
- "testing"
-
- "github.com/stretchr/testify/assert"
- "github.com/stretchr/testify/require"
- data "github.com/tendermint/go-wire/data"
-)
-
-func TestEncoders(t *testing.T) {
- assert := assert.New(t)
-
- hex := data.HexEncoder
- b64 := data.B64Encoder
- rb64 := data.RawB64Encoder
- cases := []struct {
- encoder data.ByteEncoder
- input, expected []byte
- }{
- // hexidecimal
- {hex, []byte(`"1A2B3C4D"`), []byte{0x1a, 0x2b, 0x3c, 0x4d}},
- {hex, []byte(`"DE14"`), []byte{0xde, 0x14}},
- // these are errors
- {hex, []byte(`0123`), nil}, // not in quotes
- {hex, []byte(`"dewq12"`), nil}, // invalid chars
- {hex, []byte(`"abc"`), nil}, // uneven length
-
- // base64
- {b64, []byte(`"Zm9v"`), []byte("foo")},
- {b64, []byte(`"RCEuM3M="`), []byte("D!.3s")},
- // make sure url encoding!
- {b64, []byte(`"D4_a--w="`), []byte{0x0f, 0x8f, 0xda, 0xfb, 0xec}},
- // these are errors
- {b64, []byte(`"D4/a++1="`), nil}, // non-url encoding
- {b64, []byte(`0123`), nil}, // not in quotes
- {b64, []byte(`"hey!"`), nil}, // invalid chars
- {b64, []byte(`"abc"`), nil}, // length%4 != 0
-
- // raw base64
- {rb64, []byte(`"Zm9v"`), []byte("foo")},
- {rb64, []byte(`"RCEuM3M"`), []byte("D!.3s")},
- // make sure url encoding!
- {rb64, []byte(`"D4_a--w"`), []byte{0x0f, 0x8f, 0xda, 0xfb, 0xec}},
- // these are errors
- {rb64, []byte(`"D4/a++1"`), nil}, // non-url encoding
- {rb64, []byte(`0123`), nil}, // not in quotes
- {rb64, []byte(`"hey!"`), nil}, // invalid chars
- {rb64, []byte(`"abc="`), nil}, // with padding
-
- }
-
- for _, tc := range cases {
- var output []byte
- err := tc.encoder.Unmarshal(&output, tc.input)
- if tc.expected == nil {
- assert.NotNil(err, tc.input)
- } else if assert.Nil(err, "%s: %+v", tc.input, err) {
- assert.Equal(tc.expected, output, tc.input)
- rev, err := tc.encoder.Marshal(tc.expected)
- if assert.Nil(err, tc.input) {
- assert.Equal(tc.input, rev)
- }
- }
- }
-}
-
-func TestString(t *testing.T) {
- assert := assert.New(t)
-
- hex := data.HexEncoder
- b64 := data.B64Encoder
- rb64 := data.RawB64Encoder
- cases := []struct {
- encoder data.ByteEncoder
- expected string
- input []byte
- }{
- // hexidecimal
- {hex, "1A2B3C4D", []byte{0x1a, 0x2b, 0x3c, 0x4d}},
- {hex, "DE14", []byte{0xde, 0x14}},
- {b64, "RCEuM3M=", []byte("D!.3s")},
- {rb64, "D4_a--w", []byte{0x0f, 0x8f, 0xda, 0xfb, 0xec}},
- }
- for _, tc := range cases {
- data.Encoder = tc.encoder
- b := data.Bytes(tc.input)
- assert.Equal(tc.expected, b.String())
- }
-}
-
-// BData can be encoded/decoded
-type BData struct {
- Count int
- Data data.Bytes
-}
-
-// BView is to unmarshall and check the encoding
-type BView struct {
- Count int
- Data string
-}
-
-func TestBytes(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- cases := []struct {
- encoder data.ByteEncoder
- data data.Bytes
- expected string
- }{
- {data.HexEncoder, []byte{0x1a, 0x2b, 0x3c, 0x4d}, "1A2B3C4D"},
- {data.B64Encoder, []byte("D!.3s"), "RCEuM3M="},
- {data.RawB64Encoder, []byte("D!.3s"), "RCEuM3M"},
- }
-
- for i, tc := range cases {
- data.Encoder = tc.encoder
- // encode the data
- in := BData{Count: 15, Data: tc.data}
- d, err := json.Marshal(in)
- require.Nil(err, "%d: %+v", i, err)
- // recover the data
- out := BData{}
- err = json.Unmarshal(d, &out)
- require.Nil(err, "%d: %+v", i, err)
- assert.Equal(in.Count, out.Count, "%d", i)
- assert.Equal(in.Data, out.Data, "%d", i)
- // check the encoding
- view := BView{}
- err = json.Unmarshal(d, &view)
- require.Nil(err, "%d: %+v", i, err)
- assert.Equal(tc.expected, view.Data)
- }
-}
-
-/*** this is example code for the byte array ***/
-
-type Dings [5]byte
-
-func (d Dings) MarshalJSON() ([]byte, error) {
- return data.Encoder.Marshal(d[:])
-}
-
-func (d *Dings) UnmarshalJSON(enc []byte) error {
- var ref []byte
- err := data.Encoder.Unmarshal(&ref, enc)
- copy(d[:], ref)
- return err
-}
-
-func TestByteArray(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- d := Dings{}
- copy(d[:], []byte("D!.3s"))
-
- cases := []struct {
- encoder data.ByteEncoder
- data Dings
- expected string
- }{
- {data.HexEncoder, Dings{0x1a, 0x2b, 0x3c, 0x4d, 0x5e}, "1A2B3C4D5E"},
- {data.B64Encoder, d, "RCEuM3M="},
- {data.RawB64Encoder, d, "RCEuM3M"},
- }
-
- for i, tc := range cases {
- data.Encoder = tc.encoder
- // encode the data
- d, err := json.Marshal(tc.data)
- require.Nil(err, "%d: %+v", i, err)
- // recover the data
- out := Dings{}
- err = json.Unmarshal(d, &out)
- require.Nil(err, "%d: %+v", i, err)
- assert.Equal(tc.data, out, "%d", i)
- // check the encoding
- view := ""
- err = json.Unmarshal(d, &view)
- require.Nil(err, "%d: %+v", i, err)
- assert.Equal(tc.expected, view)
- }
-
- // Test invalid data
- invalid := []byte(`"food"`)
- data.Encoder = data.HexEncoder
- ding := Dings{1, 2, 3, 4, 5}
- parsed := ding
- require.Equal(ding, parsed)
- // on a failed parsing, we don't overwrite any data
- err := json.Unmarshal(invalid, &parsed)
- require.NotNil(err)
- assert.Equal(ding, parsed)
-}
-
-// I guess this is "proper"? Seems funny though...
-// echo -n "deadbQ==" | base64 -D | od -H
-// echo -n "deadb9==" | base64 -D | od -H
-// both ---> 6f9de675
-// func TestWTF(t *testing.T) {
-// assert := assert.New(t)
-// url := base64.URLEncoding
-// std := base64.StdEncoding
-
-// cases := []struct {
-// s string
-// e *base64.Encoding
-// }{
-// // these fail...
-// {"D4_a--1=", url},
-// {"D4_a0-1=", url},
-// {"D4_a__1=", url},
-// {"D4/a++1=", std},
-// {"D4_a0-9=", url},
-// {"Finey-1=", url},
-// {"Finey41=", url},
-// {"Finey+1=", std},
-// {"Finey+1+", std},
-// {"Fineyo1=", url},
-// // these work
-// {"D4_a0-A=", url},
-// {"D4_a0BA=", url},
-// // more random ending in [1-9]=
-// {"deadbe7=", url},
-// {"deadb7==", url},
-// {"deadbe==", url},
-// // wait, 0= is safe...
-// {"deadbe0=", url},
-// {"deadAA2=", std},
-// {"deadAA9=", std},
-// {"deadaa9=", url},
-// }
-
-// for _, tc := range cases {
-// b, err := tc.e.DecodeString(tc.s)
-// if assert.Nil(err, "%#v", err) {
-// s := tc.e.EncodeToString(b)
-// assert.Equal(tc.s, s)
-// }
-// }
-// }
+++ /dev/null
-package data_test
-
-import (
- "strings"
-
- data "github.com/tendermint/go-wire/data"
-)
-
-/** These are some sample types to test parsing **/
-
-type Fooer interface {
- Foo() string
-}
-
-type Bar struct {
- Name string `json:"name"`
-}
-
-func (b Bar) Foo() string {
- return "Bar " + b.Name
-}
-
-type Baz struct {
- Name string `json:"name"`
-}
-
-func (b Baz) Foo() string {
- return strings.Replace(b.Name, "r", "z", -1)
-}
-
-type Nested struct {
- Prefix string `json:"prefix"`
- Sub FooerS `json:"sub"`
-}
-
-func (n Nested) Foo() string {
- return n.Prefix + ": " + n.Sub.Foo()
-}
-
-/** This is parse code: todo - autogenerate **/
-
-var fooersParser data.Mapper
-
-type FooerS struct {
- Fooer
-}
-
-func (f FooerS) MarshalJSON() ([]byte, error) {
- return fooersParser.ToJSON(f.Fooer)
-}
-
-func (f *FooerS) UnmarshalJSON(data []byte) (err error) {
- parsed, err := fooersParser.FromJSON(data)
- if err == nil {
- f.Fooer = parsed.(Fooer)
- }
- return
-}
-
-// Set is a helper to deal with wrapped interfaces
-func (f *FooerS) Set(foo Fooer) {
- f.Fooer = foo
-}
-
-/** end TO-BE auto-generated code **/
-
-/** This connects our code with the auto-generated helpers **/
-
-// this init must come after the above init (which should be in a file from import)
-func init() {
- fooersParser = data.NewMapper(FooerS{}).
- RegisterImplementation(Bar{}, "bar", 0x01).
- RegisterImplementation(Baz{}, "baz", 0x02).
- RegisterImplementation(Nested{}, "nest", 0x03)
-}
+++ /dev/null
-/*
-Data is designed to provide a standard interface and helper functions to
-easily allow serialization and deserialization of your data structures
-in both binary and json representations.
-
-This is commonly needed for interpreting transactions or stored data in the
-abci app, as well as accepting json input in the light-client proxy. If we
-can standardize how we pass data around the app, we can also allow more
-extensions, like data storage that can interpret the meaning of the []byte
-passed in, and use that to index multiple fields for example.
-
-Serialization of data is pretty automatic using standard json and go-wire
-encoders. The main issue is deserialization, especially when using interfaces
-where there are many possible concrete types.
-
-go-wire handles this by registering the types and providing a custom
-deserializer:
-
- var _ = wire.RegisterInterface(
- struct{ PubKey }{},
- wire.ConcreteType{PubKeyEd25519{}, PubKeyTypeEd25519},
- wire.ConcreteType{PubKeySecp256k1{}, PubKeyTypeSecp256k1},
- )
-
- func PubKeyFromBytes(pubKeyBytes []byte) (pubKey PubKey, err error) {
- err = wire.ReadBinaryBytes(pubKeyBytes, &pubKey)
- return
- }
-
- func (pubKey PubKeyEd25519) Bytes() []byte {
- return wire.BinaryBytes(struct{ PubKey }{pubKey})
- }
-
-This prepends a type-byte to the binary representation upon serialization and
-using that byte to switch between various representations on deserialization.
-go-wire also supports something similar in json, but it leads to kind of ugly
-mixed-types arrays, and requires using the go-wire json parser, which is
-limited relative to the standard library encoding/json library.
-
-In json, the typical idiom is to use a type string and message data:
-
- {
- "type": "this part tells you how to interpret the message",
- "data": ...the actual message is here, in some kind of json...
- }
-
-I took inspiration from two blog posts, that demonstrate how to use this
-to build (de)serialization in a go-wire like way.
-
-* http://eagain.net/articles/go-dynamic-json/
-* http://eagain.net/articles/go-json-kind/
-
-This package unifies these two in a single Mapper.
-
-You app needs to do three things to take full advantage of this:
-
-1. For every interface you wish to serialize, define a holder struct with some helper methods, like FooerS wraps Fooer in common_test.go
-2. In all structs that include this interface, include the wrapping struct instead. Functionally, this also fulfills the interface, so except for setting it or casting it to a sub-type it works the same.
-3. Register the interface implementations as in the last init of common_test.go. If you are currently using go-wire, you should be doing this already
-
-The benefits here is you can now run any of the following methods, both for
-efficient storage in our go app, and a common format for rpc / humans.
-
- orig := FooerS{foo}
-
- // read/write binary a la tendermint/go-wire
- bparsed := FooerS{}
- err := wire.ReadBinaryBytes(
- wire.BinaryBytes(orig), &bparsed)
-
- // read/write json a la encoding/json
- jparsed := FooerS{}
- j, err := json.MarshalIndent(orig, "", "\t")
- err = json.Unmarshal(j, &jparsed)
-
-See https://github.com/tendermint/go-wire/data/blob/master/common_test.go to see
-how to set up your code to use this.
-*/
-package data
+++ /dev/null
-package data
-
-import (
- "bytes"
- "encoding/json"
- "reflect"
-
- "github.com/pkg/errors"
-)
-
-type jsonMapper struct {
- kindToType map[string]reflect.Type
- typeToKind map[reflect.Type]string
-}
-
-func newJsonMapper(base interface{}) *jsonMapper {
- return &jsonMapper{
- kindToType: map[string]reflect.Type{},
- typeToKind: map[reflect.Type]string{},
- }
-}
-
-// ToJSON is a convenience method to serialize with encoding/json
-func ToJSON(o interface{}) ([]byte, error) {
- d, err := json.MarshalIndent(o, "", " ")
- return d, errors.WithStack(err)
-}
-
-// FromJSON is a convenience method to deserialize with encoding/json
-func FromJSON(d []byte, o interface{}) error {
- return errors.WithStack(
- json.Unmarshal(d, o))
-}
-
-// registerImplementation allows you to register multiple concrete types.
-//
-// Returns itself to allow calls to be chained
-func (m *jsonMapper) registerImplementation(data interface{}, kind string, b byte) {
- typ := reflect.TypeOf(data)
- m.kindToType[kind] = typ
- m.typeToKind[typ] = kind
-}
-
-// getTarget returns a pointer to an allocated object of the proper kind
-func (m *jsonMapper) getTarget(kind string) (interface{}, error) {
- typ, ok := m.kindToType[kind]
- if !ok {
- return nil, errors.Errorf("Unmarshaling into unknown type: %s", kind)
- }
- target := reflect.New(typ).Interface()
- return target, nil
-}
-
-func (m *jsonMapper) getKind(obj interface{}) (string, error) {
- typ := reflect.TypeOf(obj)
- kind, ok := m.typeToKind[typ]
- if !ok {
- return "", errors.Errorf("Marshalling from unknown type: %#v", obj)
- }
- return kind, nil
-}
-
-// FromJSON will deserialize the output of ToJSON for every registered
-// implementation of the interface
-func (m *jsonMapper) FromJSON(data []byte) (interface{}, error) {
- // handle null specially
- if bytes.Equal(data, []byte("null")) {
- return nil, nil
- }
- e := envelope{
- Data: &json.RawMessage{},
- }
- err := json.Unmarshal(data, &e)
- if err != nil {
- return nil, err
- }
- // switch on the type, then unmarshal into that
- bytes := *e.Data.(*json.RawMessage)
- res, err := m.getTarget(e.Kind)
- if err != nil {
- return nil, err
- }
- err = json.Unmarshal(bytes, &res)
- // getTarget returned a pointer for Unmarshall, now dereference it
- res = reflect.ValueOf(res).Elem().Interface()
- return res, err
-}
-
-// ToJson will serialize a registered implementation into a format like:
-// {
-// "type": "foo",
-// "data": {
-// "name": "dings"
-// }
-// }
-// this allows us to properly deserialize with FromJSON
-func (m *jsonMapper) ToJSON(data interface{}) ([]byte, error) {
- // handle null specially
- if data == nil {
- return []byte("null"), nil
- }
- raw, err := json.Marshal(data)
- if err != nil {
- return nil, errors.WithStack(err)
- }
- kind, err := m.getKind(data)
- if err != nil {
- return nil, err
- }
- msg := json.RawMessage(raw)
- e := envelope{
- Kind: kind,
- Data: &msg,
- }
- return json.Marshal(e)
-}
-
-// envelope lets us switch on type
-type envelope struct {
- Kind string `json:"type"`
- Data interface{} `json:"data"`
-}
+++ /dev/null
-package data_test
-
-import (
- "encoding/json"
- "testing"
-
- "github.com/stretchr/testify/assert"
- "github.com/stretchr/testify/require"
- data "github.com/tendermint/go-wire/data"
-)
-
-func TestSimpleJSON(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- cases := []struct {
- foo Fooer
- }{
- {foo: Bar{Name: "Fly"}},
- {foo: Baz{Name: "For Bar"}},
- }
-
- for _, tc := range cases {
- assert.NotEmpty(tc.foo.Foo())
- wrap := FooerS{tc.foo}
- parsed := FooerS{}
- d, err := json.Marshal(wrap)
- require.Nil(err, "%+v", err)
- err = json.Unmarshal(d, &parsed)
- require.Nil(err, "%+v", err)
- assert.Equal(tc.foo.Foo(), parsed.Foo())
- }
-}
-
-func TestNestedJSON(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- cases := []struct {
- expected string
- foo Fooer
- }{
- {"Bar Fly", Bar{Name: "Fly"}},
- {"Foz Baz", Baz{Name: "For Bar"}},
- {"My: Bar None", Nested{"My", FooerS{Bar{"None"}}}},
- }
-
- for _, tc := range cases {
- assert.Equal(tc.expected, tc.foo.Foo())
- wrap := FooerS{tc.foo}
- parsed := FooerS{}
- // also works with indentation
- d, err := data.ToJSON(wrap)
- require.Nil(err, "%+v", err)
- err = json.Unmarshal(d, &parsed)
- require.Nil(err, "%+v", err)
- assert.Equal(tc.expected, parsed.Foo())
- }
-}
+++ /dev/null
-package data_test
-
-import (
- "fmt"
- "testing"
-
- "github.com/stretchr/testify/assert"
- "github.com/stretchr/testify/require"
- data "github.com/tendermint/go-wire/data"
-)
-
-type Ptr interface {
- Point() string
-}
-
-// implementations
-type PStr string
-type PInt int
-
-func (p *PStr) Point() string {
- if p == nil {
- return "snil"
- }
- return string(*p)
-}
-
-func (p *PInt) Point() string {
- if p == nil {
- return "inil"
- }
- return fmt.Sprintf("int: %d", int(*p))
-}
-
-var ptrMapper data.Mapper
-
-// we register pointers to those structs, as they fulfill the interface
-// but mainly so we can test how they handle nil values in the struct
-func init() {
- ps, pi := PStr(""), PInt(0)
- ptrMapper = data.NewMapper(KeyS{}).
- RegisterImplementation(&ps, "str", 5).
- RegisterImplementation(&pi, "int", 25)
-}
-
-// PtrS adds json serialization to Ptr
-type PtrS struct {
- Ptr
-}
-
-func (p PtrS) MarshalJSON() ([]byte, error) {
- return ptrMapper.ToJSON(p.Ptr)
-}
-
-func (p *PtrS) UnmarshalJSON(data []byte) (err error) {
- parsed, err := ptrMapper.FromJSON(data)
- if err == nil && parsed != nil {
- p.Ptr = parsed.(Ptr)
- }
- return
-}
-
-// TestEncodingNil happens when we have a nil inside the embedding struct
-func TestEncodingNil(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- s := PStr("foo")
- i := PInt(567)
- ptrs := []Ptr{&s, &i, nil}
-
- for i, p := range ptrs {
- wrap := PtrS{p}
-
- js, err := data.ToJSON(wrap)
- require.Nil(err, "%d: %+v", i, err)
-
- parsed := PtrS{}
- err = data.FromJSON(js, &parsed)
- require.Nil(err, "%d: %+v", i, err)
- if wrap.Ptr != nil {
- assert.Equal(parsed.Point(), wrap.Point())
- }
- assert.Equal(parsed.Ptr, wrap.Ptr)
- }
-}
+++ /dev/null
-package data_test
-
-import (
- "testing"
-
- "github.com/stretchr/testify/assert"
- "github.com/stretchr/testify/require"
- data "github.com/tendermint/go-wire/data"
-)
-
-// Key
-type Key interface{}
-
-// implementations
-type Cool struct{ data.Bytes }
-type Lame struct{ data.Bytes }
-
-var keyMapper data.Mapper
-
-// register both private key types with go-wire/data (and thus go-wire)
-func init() {
- keyMapper = data.NewMapper(KeyS{}).
- RegisterImplementation(Cool{}, "cool", 1).
- RegisterImplementation(Lame{}, "lame", 88)
-}
-
-// KeyS adds json serialization to Key
-type KeyS struct {
- Key
-}
-
-func (p KeyS) MarshalJSON() ([]byte, error) {
- return keyMapper.ToJSON(p.Key)
-}
-
-func (p *KeyS) UnmarshalJSON(data []byte) (err error) {
- parsed, err := keyMapper.FromJSON(data)
- if err == nil {
- p.Key = parsed.(Key)
- }
- return
-}
-
-func TestSimpleText(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- data.Encoder = data.HexEncoder
- cases := []struct {
- key Key
- expected string
- }{
- {key: Cool{data.Bytes{0x42, 0x69}}, expected: "cool:4269"},
- {key: Lame{data.Bytes{0x70, 0xA3, 0x1e}}, expected: "lame:70A31E"},
- }
-
- for _, tc := range cases {
- wrap := KeyS{tc.key}
- // check json
- _, err := data.ToJSON(wrap)
- require.Nil(err, "%+v", err)
- // check text
- text, err := data.ToText(wrap)
- require.Nil(err, "%+v", err)
- assert.Equal(tc.expected, text)
- }
-}
-
-func TestBytesTest(t *testing.T) {
- assert, require := assert.New(t), require.New(t)
-
- data.Encoder = data.HexEncoder
- cases := []struct {
- bytes data.Bytes
- expected string
- }{
- {data.Bytes{0x34, 0x54}, "3454"},
- {data.Bytes{}, ""},
- {data.Bytes{0xde, 0xad, 0xbe, 0x66}, "DEADBE66"},
- }
-
- for _, tc := range cases {
- text, err := data.ToText(tc.bytes)
- require.Nil(err, "%+v", err)
- assert.Equal(tc.expected, text)
- }
-}
+++ /dev/null
-package data
-
-import "fmt"
-
-/*
-Mapper is the main entry point in the package.
-
-On init, you should call NewMapper() for each interface type you want
-to support flexible de-serialization, and then
-RegisterImplementation() in the init() function for each implementation of these
-interfaces.
-
-Note that unlike go-wire, you can call RegisterImplementation separately from
-different locations with each implementation, not all in one place.
-Just be careful not to use the same key or byte, of init will *panic*
-*/
-type Mapper struct {
- *jsonMapper
- *binaryMapper
-}
-
-// NewMapper creates a Mapper.
-//
-// If you have:
-// type Foo interface {....}
-// type FooS struct { Foo }
-// then you should pass in FooS{} in NewMapper, and implementations of Foo
-// in RegisterImplementation
-func NewMapper(base interface{}) Mapper {
- return Mapper{
- jsonMapper: newJsonMapper(base),
- binaryMapper: newBinaryMapper(base),
- }
-}
-
-// RegisterImplementation should be called once for each implementation of the
-// interface that we wish to support.
-//
-// kind is the type string used in the json representation, while b is the
-// type byte used in the go-wire representation. data is one instance of this
-// concrete type, like Bar{}
-func (m Mapper) RegisterImplementation(data interface{}, kind string, b byte) Mapper {
- m.jsonMapper.registerImplementation(data, kind, b)
- m.binaryMapper.registerImplementation(data, kind, b)
- return m
-}
-
-// ToText is a rather special-case serialization for cli, especially for []byte
-// interfaces
-//
-// It tries to serialize as json, and the result looks like:
-// { "type": "string", "data": "string" }
-// Then it will return "<type>:<data>"
-//
-// Main usecase is serializing eg. crypto.PubKeyS as "ed25119:a1b2c3d4..."
-// for displaying in cli tools.
-//
-// It also supports encoding data.Bytes to a string using the proper codec
-// (or anything else that has a marshals to a string)
-func ToText(o interface{}) (string, error) {
- d, err := ToJSON(o)
- if err != nil {
- return "", err
- }
-
- // try to recover as a string (data.Bytes case)
- var s string
- err = FromJSON(d, &s)
- if err == nil {
- return s, nil
- }
-
- // if not, then try to recover as an interface (crypto.*S case)
- text := textEnv{}
- err = FromJSON(d, &text)
- if err != nil {
- return "", err
- }
- res := fmt.Sprintf("%s:%s", text.Kind, text.Data)
- return res, nil
-}
-
-// textEnv lets us parse an envelope if the data was output as string
-// (either text, or a serialized []byte)
-type textEnv struct {
- Kind string `json:"type"`
- Data string `json:"data"`
-}